Description Wired Optical MouseSize:126*71*39MMWeight: 127gSensor:Sunplus 1684 DPI shift ability 1000~1600~2400~3200 Forward & Backward function, DPI switch buttonLED BacklitKey life: 5 million times Support windows 2000/NT/ME/XP/Vista/7 and Mac OS 8.6 or higher version Information Country: CNHeight: 40.0Width: 140.0Net Weight: 204.0 kg