opto wheel mouse

Genius Launches Opto Mouse, Traveler 355
Genius has announced the unveiling of World's First Opto Mouse, the Traveler 355 Laser, 1600 DPI Laser Mouse

clipped from www.genius-europe.com description: ...just Touch it - OptoWheel technology - an optical sensor to replace the wheel and features a comfortable touch scroll panel. This allows for four way scrolling and is easier to use than the traditional mechanical wheel. On the bottom of Traveler 355 Laser is the advanced laser technology that makes this mouse work reliably on most types of surfaces