The 19-Key USB Numeric Keypad and Optical Mouse from Adesso combines a numeric keypad with a mousing device for those who still need the benefits of a number pad but also need a mouse easily within reach. This device includes a transparent cover for the numeric pad when primarily mousing, so that keys are not accidentally activated during usage. There is a large scroll wheel on the pad when surfing the internet, while the mousing device has 1000 dpi resolution for smooth and accurate cursor control. The keys on the keypad feature a reduced key pitch (i.e. the keycaps and spacing are smaller than on a standard keyboard), allowing the mouse to be a standard size. If the key pitch of the keypad was standard, the mouse would only be usable by users with very large hands.