Fox MOUSE USB FOX

Utilizing the latest optical sensing technology, the Fox USB Optical Scroll Mouse records precise motion over a variety of surfaces without a mouse pad.
Optical tracking - 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 Fox US Optical Scroll Mouse employs a scan rate of 800dpi and enables crisp motion without a mouse pad, ball or rolle