Kensington Orbit 72337 Trackball with Scroll Ring

Medium 40mm ball is designed as a perfect sphere to provide exceptional precisionbrTrackballWorkssupTM/sup software lets you customize the 2 buttons, adjust cursor and scrolling speedbrOptical tracking technology for superior cursor control and accuracybrDetachable wrist rest supports hand and wrist for ergonomic comfortbrAmbidextrous design works equally well for both right-handed and left-handed usersbrPlug and Play installation via wired USB connectionbrPC and Mac® compatiblebrCompatible with Windows® 8brAward-winning Scroll Ring lets you scan up and down pages with easebr