Optical sensor(1200 cpi); 3 buttons: two primary buttons and a clickable scroll wheel; USB wireless receiver at 2.4 GHz
Recommended system requirements: Available USB port; Microsoft Windows XP/Vista/7
Dimensions (W x D x H)	96 x 36 x 57 mm
Package dimensions (W x D x H)	218 x 160 x 80 mm
Weight	0.058 kg
Package weight	0.153 kg