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 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 Pro Fit Ergo Vertical Wireless Mouse from Kensington presents with a body angle of approximately 47°. A short flange keeps the side of the hand clear of the surface but still permits most of the little finger to make contact during movement. This wireless mouse is contoured specifically for right-handed use and operates plug-and-play. However, optional drivers are available for both Windows and Mac OS should one desire to customize the button functions. A convenient DPI switch accommodates quick access to four DPI settings (800, 1000, 1200 and 1600) to accommodate different work requirements. The wireless receiver offers an impressive 20 metre range and can be stored in the underside of the mouse to ensure it isn't misplaced. The scroll wheel is spherical and has a lower protrusion from the body of the mouse than most traditional scroll wheels with rotation being possible using the side of the fingers. Detents provide clear feedback but the smaller diameter of the scroll "sphere" seems to require a greater degree of force than most traditional "wheel" designs.

The size of this mouse means it is best suited for smaller to average sized hands. The body is narrower than most vertical mouse designs, which can lead to a tendency to want to "grip" the mouse which has the potential to lead to exerting unnecessary static grip force.
Note: While being identified by the manufacturer as a "vertical" mouse this angle is substantially less than most other "vertical" mousing products, the majority of which orient the hand well above 60° and therefore much closer to a truly vertical presentation.

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.

Created for those wanting an ambidextrous, wireless mouse with a more traditional look, this mouse offers a symmetrical design and a centrally located scroll wheel. Thumb indentations on both sides of the mouse provide a textured anti-slip surface. The mouse gives left- and right-handed individuals the option of distributing the workload by using the same mouse in either hand.

The Goldtouch Wireless Ambidextrous Mouse has a 1000 dpi optical sensor, and is powered by one or two AA batteries. (Note: Estimated battery life is two months with one battery, and four months with two batteries.) A wireless USB 2.4 Ghz mini receiver is included.

Caution: Those with larger hands may find this mouse too small for all but occasional use.

The Pro Fit Left-Handed Ergo Wireless Mouse from Kensington presents with a body angle of 41°, rotating the hand away from a traditional fully prone position. This wireless mouse is contoured specifically for left-handed use and operates plug-and-play via standard 2.4GHz wireless with the included receiver dongle. 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 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 Lift Vertical Mouse from Logitech is styled after the larger MX Vertical Advance Ergonomic Mouse. The Lift, designed specifically for small to medium-sized hands, offers the same fixed 57° to reduce the risks associated with pronation of the forearm. The angled body is designed to provide some support necessary for the hand to "relax" while engaged with the mouse.

The Lift Vertical Mouse is equipped with a top quality sensor capable of reading from 400 - 4000 DPI. With a nominal setting of 1000 DPI, the Lift can be adjusted anywhere within the range in 100 DPI increments. The DPI button, just behind the scroll wheel, offers easy access to dpi adjustment for basic or fine control movements. The scroll wheel has a rubber tire for grip and features distinct but soft detents, with the operation almost silent. There are 5 programmable buttons (left, right, back, forward, & middle click).

The buttons on the Lift feature a light curvature to facilitate a more natural curl to the fingers and to provide more control. The left and right buttons require low effort to activate and are almost silent, with the tactile response being a better indicator of switch activation than the sound. However, the hard plastic of the buttons could lead to pinching the mouse between the thumb and fingers in an attempt to achieve a better sensation of control.

The Lift Vertical Mouse offers 2 wireless connection options: 2.4Ghz Logi Bolt Receiver with an operation distance up to 33 feet, and Bluetooth (Bluetooth Low Energy Technology required). It is powered by a single AA battery that the manufacture claims can provide up to 24 months of use (of course, individual usage may affect this). Using Logitech "FLOW" it is possible to connect with and control up to 3 computing devices using a single mouse.

The Microsoft Wireless Laser Mouse 6000 is a contoured wireless mouse with four-way scrolling, instant viewing of your open windows, and a magnifier function to enlarge or edit details on your page.

Note: This mouse is not the same as the Microsoft Natural Wireless Laser Mouse 6000, which is discontinued.

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.

IOGEAR's Phaser 3-in-1 Presenter / Mouse is an excellent tool for presentations at offices, libraries, and schools. The thumb-operated multi-directional trackball allows the unit to work as a fully functional mouse, as well as a remote presenter. The built-in laser pointer helps the user to direct the audience's attention appropriately. The batteries can be easily charged through the USB charging cradle. The versatile Phaser 3-1 can also transform to a desktop mouse. The contoured design allows for comfort and less fatigue while in use.