Kensington Orbit Wired Trackball with Scroll Ring

Award-winning Scroll Ring lets you scan up and down pages with ease Medium 40mm ball is designed as a perfect sphere to provide exceptional precision TrackballWorks™ software lets you customize the 2 buttons, adjust cursor and scrolling speed Optical tracking technology for superior cursor control and accuracy Detachable wrist rest supports hand and wrist for ergonomic comfort Ambidextrous design works equally well for both right-handed and left-handed users Plug & Play installation via wired USB connection PC and Mac® compatible All-day comfort and scrolling come together in the Orbit Trackball with Scroll Ring. The award-winning scroll ring allows you to spin through web pages and long documents without the need for clicking. It offers better ergonomics, with less wrist and hand movement that will ease the pain of repetitive-stress injuries. TrackballWorks software gives you the opportunity to assign specific functions to your 2 buttons and create a truly customized productivity expe