HP QY777AT Black 3 Buttons 1 X Wheel USB Wired Optical 800 DPI Mouse Model Black

Reduce sticking and constant cleaning with Optical tracking - a system that works through light with less moving parts for greater durability than ball-based mice. Users benefit from a smooth, contoured shape that fits both hands - and a wheel that functions as a third button. The optical sensor within the HP us Optical scroll mouse employs a scan rate of 800DPI and enables crisp motion without a mouse pad, ball or roller. Left-handed or right-handed users can enjoy a contoured shape that suits either preference.