Mini USB receiver
Smart mouse sleeping mode for power saving
Radio frequency: 27MHz
Having 256 ID codes
3V lithium battery 180 or 300mAh
Compatible with Windows 3.1, 95, 98, 2000, ME, XP, NT and Vista
Resolution: 800, 1,200 and 1,600dpi
Size: 11.7 x 6.5 x 3.7cm