The Goldtouch Ergonomic Mouse (also known as the Goldtouch Comfort Mouse) from Key Ovation tilts the hand outward by 24°, elevating the thumb higher than the little finger. This position generates a lower level of strain on the tissues and joints of the arm, wrist and fingers than the familiar "palm down" position. The Goldtouch Ergonomic Mouse features a non-slip concave well for the thumb and oversized curved buttons combined in a rounded design that provides comfort and support for the whole hand.

Corded models of the Goldtouch Ergonomic Mouse are available for both left and right hands; Bluetooth (4.0) models (with or without Receiver Dongles) are only available for the right hand.

Note: Those whose computers are not Bluetooth-compatible by default (i.e. the majority of Windows desktop computers) should order a Goldtouch Ergonomic Mouse with Bluetooth Receiver Dongle included (KOV-GTM-BTD). For computers with built-in Bluetooth connectivity the Bluetooth version of the Goldtouch Ergonomic Mouse (KOV-GTM-B) should be ordered.

The Goldtouch Ergonomic Mouse will accommodate hand sizes up to 7.25" in length. See the Measuring Guide for how to measure.

La Goldtouch Ergonomic Mouse (aussi connu avec le nom Goldtouch Comfort Mouse) de Key Ovation incline la main vers l'extérieur de 24°, de sorte que le pouce soit plus haut que le petit doigt. Cette position cause un peut de pression sur les muscles et jointures du bras, poignet et main que la position connu de "paume vers le bas/palm down". Les caractéristics de la Goldtouch Ergonomic Mouse sont une courbe concave non glissante pour le pouce, et des grands boutons courbés qui fournit le confort et support de toute la main.

Un modèle du Goldtouch Ergonomic Mouse est disponible avec fil pour gauche et droite; le modèle Bluetooth (4.0. avec et sans la clé) sont seulement disponible pour la main droite.

Veuillez noter: Si utiliser avec ordinateurs qui ne sont pas compatible avec Bluetooth par défault (telque la majorité des ordinateurs de bureau Windows) devrait commander le Goldtouch Ergonomic Mouse qui inclus la clé Bluetooth (KOV-GTM-BTD). Pour les ordinateurs avec connections Bluetooth intégré peuvent commander la version Bluetooth du Goldtouch Ergonomic Mouse. (KOV-GTM-B).

La Goldtouch Ergonomic Mouse convient aux mains mesurant jusqu'à 7.25po de long. Consultez le Guide de Mesure pour savoir comment mesurer.

The HandshoeMouse SHIFT from Hippus NV combines the anatomically-derived ergonomics of the original HandshoeMouse with an enhanced convertible ambidextrous design. This highly functional ergonomic design addresses the 3 most common issues associated with the use of a computer mouse - gripping, pinching, and tensing of the fingers. Naturally supportive contours permit the hand and fingers to completely relax whether actively engaged with the mouse or just resting between movements. This relaxed position eliminates the sustained static tension commonly maintained when using a mouse, and associated with the development of RSI. With its convertible ambidextrous design and three size options, virtually anyone can receive full support of the hand, wrist and fingers while actively mousing, whether right- or left-handed. Two low force light click buttons and a scroll wheel (clickable for middle click) provide standard "Plug-and-Play" functions. For convenience the HandshoeMouse SHIFT offers both Bluetooth wireless (powered by a rechargeable internal battery) and corded functionality.
Note: For bluetooth connection the computer must have integrated bluetooth connectivity or be equipped with an external bluetooth receiver.

The HandshoeMouse SHIFT does not require any passive muscle tension or use, and discourages excessive muscle exertion while actively using the mouse, making it the only mouse on the market that is almost impossible to use incorrectly. The waterfall design of the HandshoeMouse SHIFT provides a naturally curved resting support for the fingers, allowing them to fully relax between clicks. This eliminates the negative effects from an anticipation of the click which on traditional mice results in raised, hovering fingers as well as overexertion and overextension of the extensor muscles. The design also incorporates a thumb rest which supports the thumb in a neutral and relaxed fashion making the HandshoeMouse a good option for those experiencing thumb-related issues such as DeQuervain’s Tenosynovitus. The recommended usage for this mouse is on the desk surface with the forearm fully supported by the desk or an arm rest.

Due to the greater amount of weight resting on a HandshoeMouse (larger mouse, weight of hand and part of forearm) it is recommended that a firm, low friction mousing surface be used to minimize resistance to movement.

HandshoeMouse SHIFT Sizing Chart.

La HandshoeMouse SHIFT de Hippus NV combine l'ergonomie anatomique de la HandshoeMouse originale avec une conception augmentée; ambidextre convertible. Cette conception ergonomique hautement fonctionnelle répond aux trois problèmes les plus courants associés à l'utilisation d'une souris d'ordinateur : le saisir fortement (gripping), le pincer légèrement (pinching), et la tension dans les doigts. Les contours de soutien naturels permettent à la main et aux doigts de se détendre complètement, qu'ils soient en train d'utiliser la souris ou qu'ils se reposent entre les mouvements. Cette position détendue élimine la tension statique soutenue et généralement maintenue lors de l'utilisation d'une souris, et associée au développement des RSI. Grâce à sa conception ambidextre convertible et à ses trois options de taille, pratiquement tout le monde peut bénéficier d'un soutien complet de la main, du poignet et des doigts lors de l'utilisation active de la souris, que l'on soit droitier ou gaucher. Deux boutons de clics légers à force bas et une roulette de défilement (cliquable pour le clic du milieu) fournissent des fonctions standard "Plug-and-Play". La HandshoeMouse SHIFT offre les deux fonctionnalités sans fil Bluetooth (alimentée par une batterie interne rechargeable) aussi qu`avec fil. Veuillez noter: Pour une connexion Bluetooth, l'ordinateur doit avoir d'une connectivité Bluetooth intégrée ou être équipé d'un récepteur Bluetooth externe.

La HandshoeMouse SHIFT ne nécessite aucune tension ou utilisation musculaire passive, et décourage tout effort musculaire excessif lors de l'utilisation active de la souris, ce qui en fait la seule souris sur le marché qu'il est presque impossible d'utiliser de manière incorrecte. La conception en cascade de la HandshoeMouse SHIFT offre un support de repos naturellement incurvé pour les doigts, leur permettant de se détendre complètement entre les clics. Cela élimine les effets négatifs de l'anticipation du clic qui, sur les souris traditionnelles, se traduit par des doigts levés, ainsi que par un effort excessif et une surextension des muscles extenseurs. La conception intègre également un repose-pouce qui soutient le pouce de manière neutre et détendue, ce qui fait de la HandshoeMouse une bonne option pour les personnes souffrant de problèmes liés au pouce, comme le ténosynovite de DeQuervain. L'utilisation recommandée pour cette souris est sur la surface du bureau, l'avant-bras étant entièrement soutenu par le bureau ou l'accoudoir de la chaise.

En raison de la plus grande quantité de poids reposant sur une HandshoeMouse (souris plus grande, poids de la main et d'une partie de l'avant-bras), il est recommandé d'utiliser une surface de souris ferme et à faible friction pour minimiser la résistance au mouvement.

HandshoeMouse SHIFT Sizing Chart.

The Ergo M575 Wireless Trackball from Logitech replaces the earlier M570 Wireless Trackball, offering improved connectivity options. Like its predecessor, the M575 takes most of the repetitive movements and strain which the entire hand usually must perform and allocates all the workload to the thumb. Accurate optical tracking is provided by a laser sensor that offers 400-2000 DPI resolutions. With a contoured body that provides a relaxing support for the hand, the Ergo M575 is equipped with a scroll wheel and right and left click buttons, all positioned as with a traditional mouse. In addition there are Back and Forward Buttons for convenience when browsing through multiple pages. The trackball body is shaped to let the hand rest in a natural relaxed position. As with the earlier M570 model, the M575 is best suited to those with small- or average-sized hands.

Connection can be made via either Bluetooth or the storable USB mini receiver, with a single AA battery providing up to 2 years of service. A battery life indicator will advise when the battery needs replacing. Software available from Logitech offers customization of trackball functions and performance.

Note: As the Ergo M575 places the workload fully upon the thumb, (which on most other trackballs is generally shared amongst several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The RollerMouse Go (formerly the RollerMouse Mobile) by Contour Design is a compact version of the well-known RollerMouse Red, designed for mobility and ideally suited for use with compact keyboards. This central pointing device conveniently positions between the operator and keyboard space bar, keeping mousing activity "inline", i.e., in the area immediately in front of the keyboard, and eliminating the need to reach for a mouse. This also makes it suitable for use where there may be insufficient room for a mouse to be placed immediately beside the keyboard. Like all RollerMouse products, cursor movement is achieved by manipulating the tube-like cylindrical "rollerbar" with the fingertips. Rotating the rollerbar moves the cursor up and down, and sliding the bar from side to side accomplishes horizontal movement. Once the desired location is achieved, a left click can be generated by pressing down on the bar (the force required for this is adjustable from an ultra-light touch to highly tactile). Four tactile buttons and a clickable scroll wheel are located below the bar to generate left/middle/right clicks, copy, paste, and vertical scrolling. Cursor speed can be adjusted via a button on the right end of the RollerMouse Go, with ten different speed settings from 600 to 4000 DPI. The RollerMouse Go also ships with two heights of rubber feet that can be used to elevate low profile compact keyboards to better match the rollerbar height. Controls can also be customized using the downloadable driver.

The RollerMouse Go is equipped with the same larger diameter rollerbar found on the RED, as compared to that on the FREE3 or PRO3. On the RollerMouse Go this 0.8" diameter bar is 3.875" wide and offers a finer degree of control, especially for vertical movement. The surface of the bar is textured with raised bumps that offer tactile feedback to further improve all aspects of cursor control. Innovative tracking technology on the RollerMouse Go further enhances cursor control, letting it work equally well on both single and multi-monitor workstations. All these design elements make cursor control more precise and effortless without compromising durability and the robust nature of the sturdy aluminum housing. To further improve the ergonomics even the traditional mechanical "click" has been replaced with a newer "virtual" clicking mechanism that generates a "percussion-free" but audible "click" that can be adjusted in volume or fully disabled if so desired.

Because the compact RollerMouse Go is designed for mobile use it is is able to connect in three ways - to Bluetooth-enabled devices, via a an included 2.4 gHz wireless receiver, or as a wired device via the included charging cable. It also comes with a folding protective sleeve that attaches and closes magnetically.

The optional RollerMouse Go Dock accessory is for those who want the convenience of the more compact RollerMouse Go for travelling but desire the ergonomic benefits afforded by a full-size RollerMouse when they are in the office. The RollerMouse Go simply sockets into the Dock to provide extended palm and wrist support not only directly in front of the RollerMouse Go but also to the right, where a full-size keyboard will have the navigation and numeric keypad. And, when leaving the office, the RollerMouse Go again simply detaches from the dock for full portability.

While the RollerMouse Go and Dock can work perfectly well with any type or size of keyboard those using full-size or separated keyboards may wish to consider one of the full-size RollerMouse Models.

La RollerMouse Go (auparavant la RollerMouse Mobile) de Contour Design est une version compacte de la RollerMouse Red bien connu, conçue pour la mobilité et idéal pour utiliser avec des claviers compacts. Ce dispositif de pointage central se positionne entre la personne et la barre d'espace du clavier, ce qui permet de maintenir l'utilisation de la souris "en ligne", c'est-à-dire dans la zone située immédiatement devant le clavier, et évite d'avoir à s'étirer le bras pour atteindre une souris. Cela le rend également adapté aux situations où l'espace disponible est insuffisant pour placer une souris juste à côté du clavier. Comme tous les RollerMice, le déplacement du curseur est fait en manipulant la « rollerbar » une barre cylindrique en forme de tube avec le bout des doigts. La rotation de la barre à rouleau permet de déplacer le curseur vers le haut et vers le bas, tandis que le glissement de la barre d’un côté à l’autre permet un déplacement horizontal. Une fois l'emplacement souhaité atteint, un clic gauche peut être fait en appuyant sur la barre (la force nécessaire pour cela est réglable de ultra-légère à très tactile). Quatre boutons et une roulette de défilement sont situés sous la barre pour générer des clics gauche / milieu / droit, copier, coller, reculer, avancer et défiler verticalement. La vitesse du curseur peut être ajuster à l'aide d'un bouton situé à l'extrémité droite de la RollerMouse Go, avec dix niveaux de vitesse différents allant de 600 à 4 000 DPI. La RollerMouse Go est également fournie avec deux tailles de pieds en caoutchouc permettant de surélever les claviers compacts à profil bas afin de mieux les adapter à la hauteur de la rollerbar. Les commandes peuvent également être personnalisées à l'aide du pilote téléchargeable.

La RollerMouse Go est équipée de la même largeur en diamètre du barre de contrôle cylindrique que celle de la RED, contrairement à celles des modèles FREE3 ou PRO3. Sur la RollerMouse Go, cette barre de 0.8po de diamètre mesure 3.875po de large et offre un contrôle plus précis, notamment pour les mouvements verticaux. La surface entière de la barre est texturée avec des bosses élever qui offrent un retour tactile pour améliorer encore tous les aspects du contrôle du curseur. La technologie de suivi innovante de la RollerMouse Go améliore encore le contrôle du curseur, ce qui est particulièrement utile sur les postes de travail multi-moniteurs. Tous ces éléments de conception rendent le contrôle du curseur plus précis et sans effort sans compromettre la durabilité du boîtier en aluminium robuste. Pour améliorer encore l'ergonomie, même le "clic" mécanique traditionnel a été remplacé par un mécanisme de clic "virtuel" plus récent qui génère un "clic" sans percussion mais audible, dont le volume peut être ajusté ou entièrement désactivé si on le souhaite.

Parce que la RollerMouse Go compacte est conçu pour les applications mobile/portable elle peut se connecter de trois façons différentes - à des appareils compatibles Bluetooth, via une clé sans fil 2.4 GHz inclus, ou en mode avec fil avec le câble de recharge inclus. Elle est également livrée avec un sleeve de protection pliable qui se fixe et se ferme magnétiquement.

L'accessoire optionnel RollerMouse Go Dock s'adresse à ceux qui souhaitent profiter de la RollerMouse Go, plus compacte, qui est plus pratique durant le transport, tout en bénéficiant des avantages ergonomiques offerts par une RollerMouse de taille standard au bureau. La RollerMouse Go s'emboîte simplement dans le Dock pour offrir un support étendu pour la paume et poignet, non seulement directement devant la RollerMouse Go, mais aussi à droite, là où se trouvent les touches de navigation et le pavé numérique sur un clavier standard. Et, à la fin de la journée, la RollerMouse Go se détache tout simplement du Dock pour une portabilité totale.

Bien que la RollerMouse Go et le Dock fonctionnent parfaitement avec n'importe quel type ou taille de clavier, ceux qui utilisent des claviers standards ou claviers séparées pourraient considérer pour l'un des Modèles RollerMouse à taille standard.

The rechargeable R-Go Twister Mouse features an ergonomic ambidextrous design that can reduce the risk of mousing-related RSI. This is accomplished through both the 60° angle and the "twist" feature which lets the contoured upper body of the mouse "twist" 180° for either right or left-handed use. The 60° angle of the Twister Mouse greatly reduces pronation, supporting the hand and forearm in a more natural and relaxed position. Switching between left and right hands reduces the strain that is generally put on a single hand by spreading the work to both hands and allowing the hand and fingers to rest between sessions. There is also an illuminated Break reminder that can be activated and customized with the R-Go Break software to encourage regular breaks or switching between hands. Best suited for small or medium-sized hands (165-185 mm*), the Twister Mouse includes small cushioned pads to modify the height of the resting flange for the smaller or narrower hands.

The Twister Mouse has two buttons and a clickable scroll wheel for access to all standard functions and is equipped with an adjustable sensor offering five settings ranging from 400-2400 DPI. The dual-purpose charging/data cord lets it operate as a standard Wired Mouse in addition to the integrated Bluetooth. The 500 mAh rechargeable battery recharges in just two hours and can provide up to 150 hours of working time between charges. The Twister folds for transport and the included storage pouch offers protection during transport between home and office. * Sizing: The hand should be measured from the tip of the middle finger to the first crease in the wrist.

La souris rechargeable R-Go Twister Mouse présente une conception ergonomique ambidextre qui peut réduire le risque de RSI lié à l'utilisation d'une souris. Cela est possible grâce à l'angle de 60° et à la fonction "twist" qui permet au partie contourer du haut de la souris de "tourner" à 180° pour une utilisation par la main droite ou gauche. L'angle de 60° de la Twister Mouse réduit considérablement la pronation, soutenant la main et l'avant-bras dans une position plus naturelle et plus détendue. Le fait de changer entre la main gauche et la main droite réduit la tension qui est généralement sur une seule main en équilibrant le travail sur les deux mains et en permettant à la main et aux doigts de se reposer entre les sessions. Il y a également un Break reminder éclairé qui peut être activé et personnalisé avec le logiciel R-Go Break pour encourager les pauses régulières ou de changer d'une main à l'autre. Mieux adaptée aux mains de petite ou moyenne taille (165-185 mm*), la Twister Mouse vient avec des petits coussinets permettant de modifier la hauteur de la flange de repos pour les mains plus petites ou plus étroites.

La Twister Mouse a deux boutons et une molette de défilement cliquable pour accéder à toutes les fonctions standard. Elle est équipée d'un capteur ajustable offrant cinq ajustements allant de 400 à 2400 DPI. La corde de charge/données à double usage la permet de fonctionner comme une souris avec fil standard en plus du Bluetooth intégré. La batterie rechargeable de 500 mAh se recharge en seulement deux heures et peut fournir jusqu'à 150 heures de fonctionnement entre les charges. La Twister se plie pour le transport, et la pochette de rangement incluse offre une protection pendant le transport entre la maison et le bureau. * Taille: La main doit être mesurée du bout du doigt du majeur (middle finger) au premier pli du poignet.

The MX Ergo S Plus Wireless Trackball from Logitech is visually identical to the earlier MX Ergo Wireless Trackball and offers the same ergonomic benefits. The MX Ergo S Plus Wireless Trackball features a magnetic base plate on which the trackball can be angled to either 0° or 20° by a simple shift of pressure from the hand and the included 10° accessory wedge can be installed to offer a 10° to 30° option.

The MX Ergo S Plus Trackball transfers all cursor control to the thumb, which virtually eliminates arm movement when mousing. The enhanced optical tracking laser sensor offers a range from 512 to 2048 DPI, with a convenient thumb-activated Precision Mode button. The contoured body provides a relaxing support for the hand, naturally positioning the fingers over the right and left buttons that are now equipped with quiet click switches. The rubber-coated tilting scroll wheel has crisp detents and is conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

Recharging on the MX Ergo S Plus Wireless Trackball is done through the on-board USB-C charging port that now facilitates fast-charging when connected to USB-C.
NOTE: Charging cord is NOT included but any USB-C to USB-C (for quick charging) or USB-A to USB-C charging cord will work.

The MX Ergo S Plus Wireless Trackball offers Dual Connectivity – 2.4 GHz Wireless via the included Logitech Unifying receiver (USB-A), or Bluetooth 5.2 LE (see Detailed Specifications for compatibility details). Those working with multiple computers at a time may wish to take advantage of the "Logitech Flow" capability to connect with and work seamlessly across two separate computers. Note: As the MX Ergo S Plus Wireless Trackball places the workload fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The MX Ergo Wireless Trackball from Logitech shares many design features with the M570 Wireless Trackball. The body contours are virtually identical, with more angular lines and a metallic grey trackball to distinguish it from the M570. The differences focus on improved ergonomics and expanded functionality. The MX Ergo Wireless Trackball features a magnetic base plate on which the trackball can be angled to either 0° or 20° by a simple shift of pressure from the hand and the included 10° accessory wedge can be installed to offer a 10° to 30° option.

The MX Ergo Trackball transfers all cursor control to the thumb, which virtually eliminates arm movement when mousing. Accurate adjustable optical tracking is provided by a 380 DPI laser sensor with a thumb-activated Precision Mode button. The contoured body provides a relaxing support for the hand, naturally positioning the fingers over the right and left buttons. A rubber-coated tilting scroll wheel with crisp detents is conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

The MX Ergo Wireless Trackball offers Dual Connectivity - USB via the included Logitech Unifying receiver, or Bluetooth (see Detailed Specifications for compatibility details). Those working with multiple computers at a time may wish to take advantage of the "Logitech Flow" capability to connect with and work seamlessly across two separate computers.Note: As the MX Ergo Wireless Trackball places the workload fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

The Pro Fit Ergo Wireless Mouse from Kensington presents with a body angle of approximately 40°, rotating the hand away from a traditional fully prone position. This wireless mouse is contoured specifically for right-handed use and operates plug-and-play. It is able to connect via either standard 2.4 GHz wireless with the included receiver dongle, or through Bluetooth 4.0 with devices that can support this option. A switch on the underside changes mode and doubles as a batter-saving power switch. Optional software is available for both Windows and Mac OS should one desire to customize the button functions. A convenient DPI switch just behind the scroll wheel accommodates quick access to three DPI settings (800, 1200 and 1600) to accommodate different work requirements. The wireless receiver can be stored in the underside of the mouse to ensure it isn't misplaced. The scroll wheel has detents to provide clear feedback response. The click action is somewhat soft and very quiet. This lack of tactile and auditory feedback may make it difficult to determine when clicks have truly activated and may lead to a greater degree of force being exerted, resulting in unnecessary stress on the fingers.

The size of this mouse means it is best suited for smaller to average sized hands as those with larger hands will find their palm either unsupported or their fingers extending past the end of the buttons, with the "inset" of the buttons into the body of the mouse making it difficult to perform clicks. The body is fairly narrow as well, encouraging "gripping" rather than permitting larger hands to relax.

The Penguin Ambidextrous Vertical Mouse Wireless from Posturite permits either hand to rest comfortably on the base, while maintaining a relaxed vertical orientation alongside the body of the mouse. Because the hand rests on the base and not on the desk, most movement of the mouse is achieved by employing the larger motor muscles in the forearm and upper arm. However, finer cursor control can be still be achieved with small hand and/or finger movements. The ambidextrous design and central "bow-tie" switch allow for easy transitioning between right and left handed use, encouraging load-balancing use throughout the day. The weight of the hand resting on the base ensures easy movement and control, greatly limiting any need to "grip" the mouse, and permits the fingers to remain relaxed while still being in optimal position for clicking. Features include 4 level adjustable DPI (see Specifications and a precision scroll wheel. The Penguin Mouse is also available in a wired model.

In order to better meet the ergonomic requirements of the broadest range of individuals, the Penguin Mouse is available in 3 sizes - Small, Medium,and Large. This Sizing Chart can assist in determining which model will provide the best fit for those with hands that are evenly proportioned. However, for cases where unusually long fingers or a very broad palm exist, please contact us for sizing assistance.

La Penguin Ambidextrous Vertical Mouse Wireless de Posturite permet à l'une ou l'autre main de reposer confortablement sur la base, tout en maintenant une orientation verticale. Comme la main repose sur la base et non sur le bureau, la plupart des mouvements de la souris sont effectués en utilisant les muscles moteurs plus importants de l'avant-bras et du bras. Toutefois, il est possible d'obtenir un contrôle plus fin du curseur par de petits mouvements de la main et/ou des doigts. La conception ambidextre et le bouton "bow-tie" permettent de passer facilement de la main droite à la main gauche, encourageant ainsi une utilisation équilibrée tout au long de la journée. Le poids de la main reposant sur la base assure un mouvement et un contrôle faciles, limitant grandement tout besoin de "saisir" la souris, et permettant ainsi aux doigts de rester détendus tout en étant dans une position optimale pour cliquer. Parmi ses caractéristiques, le DPI ajustable (400, 600, 800 ou 1200), une molette de défilement de précision, et une couche antimicrobien BioCote à base d'argent). La Penguin est aussi disponible avec fil.

Afin de mieux répondre aux exigences ergonomiques du plus grand nombre de personnes, la souris Penguin est disponible en trois tailles : Petite, Moyenne et Grande. Ce Tableau des Tailles peut aider à déterminer le modèle qui conviendra le mieux aux personnes dont les mains sont de proportion égale. Toutefois, en cas de doigts inhabituellement longs ou de paume très large, nous vous encourageons à nous contacter pour obtenir une assistance avec la taille.

The MX Vertical Advanced Ergonomic Mouse from Logitech is their first attempt at offering a mouse which more aggressively reduces pronation than other mice in their line. The body of the MX Vertical is angled at a fixed 57° to reduce the risks associated with pronation of the forearm. The angled body is designed to provide the support necessary for the hand to "relax" while engaged with the mouse. However, those with smaller or narrower hands may find that they need to maintain a degree of tension to hold their hands "up" in position over the buttons. Large or wide hands will likely have less of a problem with this requirement to maintain hand position.

The MX Vertical is equipped with a top quality sensor capable of reading from 400 - 4000 DPI. Two nominal settings of 1000 and 1600 DPI can be adjusted anywhere within the range in 50 DPI increments. The top-mounted DPI button enables users to adjust the mouse as needed for basic or fine control movements. The scroll wheel has a rubber tire for grip and features distinct but soft detents. There are 4 programmable buttons (left, right, back, & forward).

The MX Vertical offers 3 connection options: Wired via the charging cord, 2.4Ghz Logitech Unifying Receiver with an operation distance up to 33 feet, and Bluetooth (Bluetooth Low Energy Technology required). The 270mAh Li-Po rechargeable battery can provide up to 4 months use on a single charge and offers a 1 minute Quick Charge that can provide up to 3 hours of use. Of course, individual usage may affect this. Using Logitech "FLOW" users are able to connect to and control up to 3 computing devices using a single mouse.

The "flatness" of the buttons on the MX Vertical prohibit the fingers from achieving a fully relaxed and naturally curved "position of function". This factor, combined with the almost slick surface on the buttons could lead users to try to "pinch" the mouse between the thumb and fingers in an attempt to achieve a better sensation of "control". In addition, to minimize the activation force on the buttons the fingertips need to be as close to the end of the buttons as possible. Those with large hands or very long fingers may be able to achieve this position but most users will find their fingertips falling short of this "optimum" position, resulting in a higher force being required for click activation.

The FastForward 3-Mode Vertical Mouse from Bakker Elkhuizen positions the hand rotated upward and outward to a more vertical angle which reduces pronation. By moving away from the traditional palm-down position, the strain on the soft tissues of the forearm can be greatly reduced. The body of the FastForward is also designed to provide a comfortable supportive structure for the hand, encouraging the adoption of a position where the fingers relax to curl and rest naturally over the buttons. The angled position and the support offered to the hand encourage mouse movement from the arm rather than the wrist, encouraging a more neutral alignment of the wrist while working.

The FastForward is capable of connecting via Bluetooth (supports 2 device connections), 2.4 GHz wireless (using the included USB-C receiver which stores in the mouse), or as a corded mouse when using the dual-purpose USB-C charging/data cord. Note that the FastForward is USB-C native but can be used with an adapter (not included) to connect to a USB-A port. The rechargeable battery offers an average of 4-months of use between charges.
NOTE: DO NOT attempt to charge the FastForward using a Quick Charger (see manual for details)

The FastForward has five sensor settings ranging from 1000-5000 DPI. These allow for fine-tuning cursor sensitivity to match work requirements or individual control preference. It is also equipped with a weighted metal scroll wheel that is easily spun to instantly jump to the start or end of documents or web pages, can be used for traditional scrolling with lightly detectable tactile detents, or can be clicked to use the mouse to scroll vertically. It is also equipped with Back and Forward buttons, a Productivity Button that instantly opens the Task Window, and a dual function multi-colour DPI/Battery Warning Indicator light. The underside of the mouse gives access to the wireless mode switch and a power switch that is selectable for Windows or Mac use as well an having an OFF setting to extend battery life.

The RollerMouse Red by Contour Design is a central pointing device that is positioned in prime real estate immediately between the operator and keyboard space bar. This keeps all mousing activity "inline", i.e., in the area immediately in front of the keyboard, eliminating the need to reach for a mouse. This also makes it suitable for use where there may be insufficient room for a mouse to be placed immediately beside the keyboard. Like all RollerMice, cursor movement is achieved by manipulating the tube-like cylindrical "rollerbar" with the fingertips. Rotating the rollerbar moves the cursor up and down, and sliding the bar from side to side accomplishes horizontal movement. Once the desired location is achieved, a left click can be generated by pressing down on the bar (the force required for this is adjustable from an ultra-light touch to highly tactile). Eight buttons and a scroll wheel are located below the bar to generate left/middle/right clicks, copy, paste, back, forward and vertical scrolling. There is also a cursor speed button between the copy and paste buttons for accessing ten different speed settings ranging from 600 to 2800 dpi. The Red also comes with adjustable keyboard "risers" to lift up standard and compact single piece keyboards. Controls can also be customized using the downloadable driver.

The RollerMouse Red is equipped with a larger diameter rollerbar than the FREE3 or PRO3. This 0.8" diameter bar is 7.1" wide and offers a finer degree of control, especially for vertical movement. The entire surface of the bar is textured with raised bumps that offer tactile feedback to further improve all aspects of cursor control. The robust aluminum housing is solid and sturdy, and the padded palm support can be removed if desired to reduce the overall depth for greater comfort or if space is constrained. Innovative tracking technology on the RollerMouse Red further enhances cursor control, especially valuable on multi-monitor workstations. All these design elements make cursor control more precise and effortless without compromising durability and robustness. To further improve the ergonomics even the traditional mechanical "click" has been replaced with a newer "virtual" clicking mechanism that generates a "percussion-free" but audible "click" that can be adjusted in volume or fully disabled if so desired.

The RollerMouse Red Wireless is available with two different depths of palm support. The standard model is suited for most individuals whereas the PLUS model has a noticeably deeper palm support that extends the overall depth of the PLUS by an additional 2.3 inches. Because this extra depth moves the Rollerbar and the keyboard further away from the body the PLUS is really only suitable for those with significantly larger or longer hands. Both models of the RollerMouse Red Wireless can also be purchased bundled with the low profile Balance Keyboard from Contour Design.

The RollerMouse Red is also available as a wired device. The RollerMouse Red offers all of the same features along with a direct, wired connection.

View our entire range of RollerMouse products here.

Note: Data being entered using RF wireless products from Contour Design is secured using AES 128 bit encryption.

La RollerMouse Red Wireless par Contour Design est un dispositif de pointage central qui va immédiatement entre l`utilisateur et le clavier sous la barre d'espace. Toute l'activité de la souris reste ainsi "en ligne", c'est-à-dire dans la zone située immédiatement devant le clavier, ce qui évite de s`étirer pour chercher la souris. Cela permet également de l'utiliser dans les endroits où l'espace est insuffisant pour placer une souris juste à côté du clavier. Comme tous les RollerMice, l'utilisateur déplace le curseur en faisant glisser une barre de contrôle cylindrique avec le bout des doigts pour déplacer le curseur "haut" et "bas" et en faisant glisser cette barre d'un côté à l'autre pour un mouvement horizontal. Une fois l'emplacement souhaité atteint, l'utilisateur peut générer un clic gauche en appuyant sur la barre (la force nécessaire pour cela est réglable de ultra-légère à très tactile). Huit boutons et une roulette de défilement sont situés sous la barre pour générer des clics gauche / milieu / droit, copier, coller, reculer, avancer et défiler verticalement. Il y a également un bouton de vitesse du curseur entre les boutons copier et coller pour cinq réglages de vitesse différents de 800 à 2400 dpi. Le Red est également livré avec des "risers" ajustablent pour soulever les claviers conventionnels (d`un morceau et non pas pour les claviers séparer ou ajustable). Les commandes peuvent également être personnalisées à l'aide du pilote téléchargeable.

La RollerMouse Red Wireless est équipée d'une barre de roulement de plus grand diamètre que la FREE3 ou la PRO3. Cette barre de 0.8po de diamètre est de 7.1po large et offre un degré de contrôle plus fin, en particulier pour les mouvements verticaux. La surface entière de la barre est texturée avec des bosses élever qui offrent un retour tactile pour améliorer encore tous les aspects du contrôle du curseur. Le boîtier en aluminium robuste est solide et résistant, et le support de paume rembourré peut être enlever si vous le souhaitez pour réduire la profondeur totale pour un meilleur confort ou si l'espace est restreint. La technologie de suivi innovante de la RollerMouse Red améliore encore le contrôle du curseur, ce qui est particulièrement utile sur les postes de travail multi-moniteurs. Tous ces éléments de conception rendent le contrôle du curseur plus précis et sans effort sans compromettre la durabilité et la robustesse. Pour améliorer encore l'ergonomie, même le "clic" mécanique traditionnel a été remplacé par un mécanisme de clic "virtuel" plus récent qui génère un "clic" sans percussion mais audible, dont le volume peut être ajusté ou entièrement désactivé si on le souhaite.

La RollerMouse Red Wireless est disponible avec deux profondeurs différentes de support de la paume. Le modèle standard convient à la plupart des personnes, tandis que le modèle PLUS possède un support de paume significativement plus profond qui augmente la profondeur totale du PLUS de 2.3 pouces supplémentaires. Comme cette profondeur supplémentaire éloigne la Rollerbar et le clavier du corps, le modèle PLUS ne convient vraiment qu'aux personnes ayant des mains beaucoup plus grandes ou plus longues. Les deux modèles de la RollerMouse Red Wireless peuvent également être achetés avec le Balance Keyboard à profile bas de Contour Design.

La RollerMouse Red est aussi disponible avec fil. La RollerMouse Red offre toutes les mêmes fonctions tout en avoir la connection direct avec fil.

Pour voir tout la gamme des produits RollerMouse, voir ici .

Veuillez noter: Les données saisies à l'aide des produits sans fil de Contour Design sont sécurisées par un cryptage AES 128 bits.

The R-Go HE Sport Ergonomic Mouse from R-Go Tools rotates the hand upward and outward. This angled posture reduces strain on the tissues of the forearm when compared with the traditional pronated "palm down" position. In addition, because the hand is now elevated up and away from the surface, users are no longer able to "plant" the heel of their hand in the manner that the traditional mouse position encourages. Thus, the potential for the development of RSI from repetitive or sustained wrist extension is virtually eliminated.

The R-Go HE Sport Ergonomic Mouse offers support for the hand and fingers, encouraging users to let their hand relax against the natural contours. The R-Go HE Sport is sized to accommodate hand sizes ranging from 6.5" to 7.3" in length, is available in both Left and Right. It is equipped with a 4-level sensor that can read from 800-2400 DPI.

The R-Go HE Sport Ergonomic Mouse features a striking red body with contrasting silver buttons. The highly textured thumbrest ensures firm control but users with high sensitivity may find the braille-like nodules less than comfortable. Connectivity is via Bluetooth so this model will only connect with computers that are Bluetooth-enabled. For non-bluetooth environments there are both Wired and a 2.4 GHZ Wireless models available. The wired BREAK model provides also visual cues to remind users to take regular breaks in order to reduce the risk of developing RSI.
Note: When selecting the appropriate size of R-Go Mouse the hand should be measured from the tip of the middle finger to the first crease in the wrist.

The RollerMouse Pro Slim by Contour Design introduces new design features (trayless rollerbar, narrower 15" width) to the Contour Design line of RollerMouse central pointing devices. As with other models the RollerMouse Pro Slim sits immediately between the operator and keyboard space bar. This keeps all mousing activity "inline", i.e., in the area immediately in front of the keyboard, eliminating the need to reach to either left or right for a mouse. This also makes it suitable for situations where there may be insufficient room for a mouse to be placed immediately beside the keyboard. Like all RollerMouse solutions, cursor movement is achieved by manipulating the tube-like cylindrical "rollerbar" with the fingertips. Rotating the rollerbar moves the cursor up and down, and sliding the bar from side to side accomplishes horizontal movement. Once the desired location is achieved, a left click can be generated by pressing down on the bar (the force required for this is adjustable from an ultra-light touch to highly tactile). Eight buttons and a scroll wheel are located below the bar to generate left/middle/right clicks, copy, paste, back, forward and vertical scrolling. There is also a cursor speed button on the left end of the device for accessing ten different speed settings ranging from 600 to 2800 dpi. The RollerMouse Pro also comes with adjustable keyboard "risers" to lift up standard and compact single piece keyboards. Controls can also be heavily customized using the downloadable driver.

The RollerMouse Pro is equipped with a 0.7" diameter smooth-surfaced rollerbar similar to that on the premium RollerMouse Red models. The bar is 7.1" wide and offers a finer degree of control than other models that have bars of a smaller diameter, especially for vertical movement. The new "trayless" design also means that crumbs, dust or debris can no longer collect below the rollerbar but rather drop straight through onto the desk surface for easier cleanup. The robust plastic housing results in a quality sturdy housing. The Vegan Leather palm support attaches magnetically and offers firm cushioning for the heels of the hands and is easily removable for cleaning. The tracking technology on the RollerMouse Pro further enhances cursor control, especially valuable on multi-monitor workstations. All these design elements make cursor control precise and effortless without compromising durability and robustness. The "virtual" clicking mechanism generates a "percussion-free" but audible "click" that can be adjusted in volume or fully disabled if so desired.

The RollerMouse Pro is 15" in width, narrower than most other RollerMouse models. This makes it very suitable for use with compact or compact financial keyboards (such as the Balance Keyboard).
Note: Where a full-width keyboard is being used one of the wider models such as the RollerMouse Red, RollerMouse Pro3, or RollerMouse Free3 should be considered.

La RollerMouse Pro Slim de Contour Design présente de nouvelles caractéristiques de conception (barre de roulement sans plateau, largeur plus étroite de 15po) pour la gamme Contour Design de dispositifs de pointage central. Comme pour les autres modèles, la RollerMouse Pro Slim se place immédiatement entre l'opérateur et la barre d'espace du clavier. Cela garde toute activité de la souris "en ligne", c'est-à-dire dans la zone située juste devant le clavier, ce qui évite d'avoir à s'étirer le bras vers la gauche ou la droite pour bouger une souris. Cette solution convient également aux situations où il n'y a pas assez de place pour placer une souris juste à côté du clavier. Comme pour toutes les solutions RollerMouse, le déplacement du curseur s'effectue en manipulant du bout des doigts le "rollerbar" cylindrique en forme de tube. La rotation du rollerbar déplace le curseur vers le haut et vers le bas, et le glissement de la barre d'un côté à l'autre permet un déplacement horizontal. Une fois l'emplacement souhaité est atteint, un clic gauche peut être généré en appuyant sur la barre (la force requise pour ce faire est ajustable entre ultra léger à très tactile). Huit boutons et une roulette de défilement sont situés sous la barre pour générer des clics gauche/milieu/droit, copier, coller, reculer, avancer et faire défiler verticalement. Il y a également un bouton de vitesse du curseur au bout du côté gauche pour ajuster entre dix différents vitesse de 600 à 2800 dpi. La RollerMouse Pro est également livré avec des "risers" ajustablent pour soulever les claviers conventionnels et compacts d'un seul morceau. Les commandes peuvent également être très personnalisées à l'aide du pilote téléchargeable.

La RollerMouse Pro Slim est équipée d'une barre de roulement à surface lisse de 0.7po de diamètre, similaire à celle des modèles de haut qualité du RollerMouse Red. La barre a une largeur de 7.1po et offre un degré de contrôle plus fin que les autres modèles qui ont des barres d'un diamètre plus petit, en particulier pour les mouvements verticaux. La nouvelle conception "sans plateau/trayless" signifie également que les miettes, la poussière ou les débris ne peuvent plus s'accumuler sous la barre de roulement, mais tombent directement sur la surface du bureau, ce qui facilite le nettoyage. Le boîtier en plastique robuste donne une qualité solide. Le support de paume en Cuir Vegan se fixe par magnétiquement et offre un rembourrage ferme pour les talons des mains; il peut être facilement enlever pour le nettoyage. La technologie de suivi de la RollerMouse Pro Slim améliore encore le contrôle du curseur, ce qui est particulièrement utile sur les postes de travail à plusieurs moniteurs. Tous ces éléments de conception rendent le contrôle du curseur précis et sans effort, sans compromettre la durabilité et la robustesse. Le mécanisme de clic "virtuel" génère un "clic" audible mais sans percussion, dont le volume peut être ajusté ou totalement désactivé si nécessaire.

La RollerMouse Pro Slim a une largeur de 15po, plus étroite que la plupart des autres modèles de RollerMouse. Elle convient donc parfaitement à une utilisation avec des claviers compacts ou financiers compacts (tels que le Balance Keyboard ). Veuillez noter: Lorsqu'un clavier pleine largeur est utilisé, veuillez consideré l'utilisation d'un des modèles plus larges tels que la Rollermouse Red , la Rollermouse Pro3 ou la Rollermouse Free3 .

Kensington has taken their venerable Expert Mouse Optical to a new level with the new Expert Mouse Wireless Trackball. Longtime or novice trackball users now have the freedom of wireless available in a full-size trackball with the additional option of selecting whether to connect via Bluetooth 4.0 LE or traditional 2.4 GHZ wireless using a USB nano receiver. This unique dual-connection feature makes the Expert Mouse Wireless Trackball a good choice for those with a limited number of USB ports or who wish to use the trackball on multiple systems, employing Bluetooth on one and using the RF Receiver on a second or non-Bluetooth compatible system.

The Expert Mouse Wireless Trackball employs Diamond Eye optical technology for smooth, precise tracking and features the well-known Kensington Scroll Ring for quick scroll access on web pages and within lengthy documents. Four large buttons provide easy access to primary functions and can be easily customized to personal preferences through the Kensington TrackballWorks software. The ambidextrous design easily accommodates both right and left-handed use and includes a detachable rest to aid users in maintaining a more ergonomic neutral wrist alignment.

The Goldtouch FlexMouse features a size-adaptable design that uses interchangeable adapters to create a comfortable and supportive position for hands of all sizes. The interchangeable "backs" mount to the rear of the mouse and are secured in place magnetically. They can be exchanged in seconds to accommodate either different types of work or multiple individuals with varying hand sizes. Large waterfall buttons let the fingers naturally curve over the front of the mouse where they are able to rest and relax between clicks. To click a minimal curl of the fingers and average force will activate the buttons. Clicking the scroll wheel (middle click) does require above average force but this is not uncommon as it serves to ensure that accidental clicks do not occur while scrolling. A DPI adjustment button sits just behind the scroll wheel and provides multiple settings that vary from 800-2000 (depending on model).

The FlexMouse supports the hand at an angle of 24°, reducing pronation. This position rotates the forearm outward, lowering the strain and stress on the muscles and joints of the arm, wrist and hand below that of the traditional "palm down" position. Because the "back" of the mouse is interchangeable each person can select the one that provides the most appropriate support for the length of their palm.

The FlexMouse has a smooth finish that discourages the tendency to grip the mouse, further encouraging relaxation of the hand and forearm. In addition, the absence of a thumbwell and the almost vertical sides eliminate points where the thumb and pinkie finger might attempt to gain purchase, further reducing the risk of trying to control the mouse using solely the fingers. The result is that the FlexMouse feels most comfortable when being moved primarily by the entire hand and forearm.

The Goldtouch FlexMouse is only available for right handed users; in both wired and Bluetooth models.

Note: Those whose computers are not Bluetooth-compatible by default should order a Bluetooth Wireless Receiver (KOV-GTM-D).

La Goldtouch FlexMouse vient avec des adaptateurs interchangeables pour s'adapter à la taille de la main, ce qui donne une position confortable et offre un bon soutien pour toutes les tailles de mains. Les "dos" interchangeables se fixent à l'arrière de la souris et sont maintenus en place par aimantation. Ils peuvent être remplacés en quelques secondes pour s'adapter à différents types de travail ou à plusieurs personnes ayant des mains de tailles différentes. De grands boutons en cascade permettent aux doigts de se courber naturellement sur l'avant de la souris, où ils peuvent se reposer et se détendre entre deux clics. Il suffit d'une légère courbure des doigts et d'une force moyenne pour activer les boutons. Cliquer sur la molette de défilement (clic central) nécessite une force supérieure à la moyenne, mais cela n'a rien d'inhabituel, car cela permet d'éviter les clics accidentels pendant le défilement. Un bouton pour changer la vitesse du DPI est situé juste derrière la molette de défilement et offre plusieurs ajustements allant de 800 à 2000 (selon le modèle).

La FlexMouse soutient la main à un angle de 24°, réduisant ainsi la pronation. Cette position fait pivoter l'avant-bras vers l'extérieur, ce qui réduit la tension et le stress sur les muscles et les articulations du bras, du poignet et de la main par rapport à la position traditionnelle "paume vers le bas". Le "dos" de la souris étant interchangeable, chaque personne peut choisir celui qui offre le soutien le plus approprié à la longueur de sa paume.

La FlexMouse présente une finition lisse qui décourage la tendance à serrer la souris, favorisant ainsi la relaxation de la main et de l'avant-bras. De plus, l'absence de repose-pouce et les côtés presque verticaux éliminent les points où le pouce et le petit doigt pourraient tenter de s'agripper, réduisant ainsi le risque d'essayer de contrôler la souris uniquement avec les doigts. Il en résulte que la FlexMouse est plus confortable lorsqu'elle est déplacée principalement par toute la main et l'avant-bras.

La Goldtouch FlexMouse est uniquement disponible pour les utilisateurs droitiers, en version avec fil et Bluetooth.

Veuillez noter: les utilisateurs dont l'ordinateur n'est pas compatible Bluetooth par défaut doivent commander une clé sans fil Bluetooth (KOV-GTM-D).

The Pro Fit Ergo TB450 Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. The 45° angled body rotates the hand and forearm away from a prone position to reduce strain on the forearm. Cursor control is via the 34mm trackball which offers silky-smooth movement and adjustable optical tracking from 400-1600 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Vertical and horizontal scrolling function are provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

The Pro Fit Ergo TB450 Trackball offers Dual Connectivity that can simultaneously support connections to up to 3 computers or devices (1 via the included 2.4 GHz receiver and up to 2 more via Bluetooth LE).

As the Pro Fit Ergo TB450 Trackball places cursor control fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be advised to consider alternative solutions.

The Penclic Mouse (3rd Generation) provides an effortless and intuitive way to move the cursor with fine precision by employing motions similar to those used when writing with a pen. The pen can freely pivot in a recessed circular depression (ball/socket joint) on the base, allowing the user to find the best angle and orientation of the pen to maximize comfort and precision. The base itself glides to provide mouse control, and the movement of the base is achieved by using the small muscles and joints of the fingers as opposed to the larger muscle groups of the shoulder and arm. As the orientation can accommodate a wide range of positions, the user is able to move the mouse with either fine or gross movements (and accompanying positions) which can help to reduce any one set of repetitive movements. The design of the Penclic Mouse (3rd Generation) is also ambidextrous, enabling the user to easily balance the workload between the left and right hands. A number of improvements were made on this latest Penclic such as moving the scroll wheel onto the pen for easier access and better control. The buttons have also been simplified and are more intuitive and easy to use.

NOTE: This item is discontinued. As such we are unable to offer a 30 Day Customer Satisfaction Guarantee or warranty on this product.

The rechargeable Pro Fit Ergo TB550 Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. The 45° angled body rotates the hand and forearm away from a prone position to reduce strain on the forearm. Cursor control is via the 34mm trackball which offers silky-smooth movement and adjustable optical tracking from 400-1600 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Vertical and horizontal scrolling function are provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

The Pro Fit Ergo TB550 Trackball offers Dual Connectivity that can simultaneously support connections to up to 3 computers or devices (1 via the included 2.4 GHz receiver and up to 2 more via Bluetooth LE).

As the Pro Fit Ergo TB550 Trackball places cursor control fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be advised to consider alternative solutions.

The Penclic Mouse from Penclic is an elegant precision mouse using a 'pen-shaft' design to make moving your cursor as easy as writing with a pen. Mouse buttons are on the pen-shaft for quick access, while there is a scroll wheel on the base. Available in wireless or corded models.

NOTE: This item is discontinued. As such we are unable to offer a 30 Day Customer Satisfaction Guarantee or warranty on this product.