Kensington Expert Optical Trackball Mouse

Kensington Expert Optical Trackball Mouse – Large 55mm ball for maximum precision, control and comfort – Optical DiamondEye technology delivers superior precision – Ambidextrous design for left or right-handed users – PC and Mac compatible Trackball – Expert Mouse Features DiamondEyeu2122 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 Scroll Ring and Large Ball Spin the dial to move up and down web pages or documents with complete ease while the grey ball has been specially designed with an absolute spherical, hard surface for precise tracking and control 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 TrackballWorksu2122 Customisation 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 DiamondEyeu2122 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 Wired 180cm USB cable provides reliability and avoids need for batteries Detachable wrist rest cradles hand in comfort TrackballWorksu2122 lets you customize all 4 buttons, set cursor speed PC and Macu00AE compatible,