Kensington Expert Mouse Wired Trackball)

TrackballWorks™ 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
Wired 180cm USB cable provides reliability and avoids need for batteries
Detachable wrist rest cradles hand in comfort
PC and Mac® compatible
Mac® running OS X or later with an available USB Port.** Internet connections or CD ROM drives to install the software.** Compatible with Windows®7, Windows® XP, Windows Vi

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