Compact

Connection Type: 2.4 GHz Wireless connection
Wireless range: 10 meters (33 feet)
USB Protocol: 2.0
Connect / Power: On/Off
Battery Details: 1 x AA
Battery Life (not rechargeable): 12 months
DPI (Min/Max): 1000 dpi
Sensor technology: Logitech Advanced Optical Tracking
Scroll Wheel: Yes