Kensington Wired Trackball Expert Mouse K64325

KensingtonWorks™ lets you customize all 4 buttons, set cursor speed
DiamondEye™ optical tracking technology for premium cursor control and accuracy
Award-winning Scroll Ring lets you scan up and down pages with ease
Large 55mm ball is designed as a perfect sphere to provide exceptional precision
Detachable wrist rest supports hand and wrist for ergonomic comfort
Reliable wired USB connection

Operating System(s) :     Chrome OS, macOS, Windows
Compatibility :                 Windows 7, Windows 8, Windows 8.1, macOS 10.8, Windows 10, macOS X 10.11, macOS 10.10 or above, Chrome OS 44 or above, macOS 10.9, macOS Sierra 10.12, macOS 10.13 or above
Controls :                       Customizable Buttons, Scroll ring
Trackball Diameter  :     55 mm

KensingtonWorks™ Customization - Free downloadable software provides an even more personalized experience, giving you the ability to assign a wide variety of program functions to each of the 4 buttons, as well as controlling the pointer speed and scrolling speed.

DiamondEye™ Optical Tracking - Movement detection technology provides smooth, precise cursor control so you can get where you want on the screen quickly with less hand movement, improving productivity and efficiency.

Ambidextrous Design - Works equally well for both right-handed and left-handed users to get the most out of their trackball.

Detachable Wrist Rest - Soft cushioning cradles the hand and wrist in ergonomic comfort for pain-free productivity during extended periods of activity on the computer.