RF carrier: 2402-2480MHz
RF operation channel: 16, auto frequency hopping
USB: USB 2.0
Operation systems: Windows 2000, Me, XP, Vista, Win 7
Power: 2 * AAA battery (not included)
Rated operation current: 15mA, 1.5V

3-level power saving mode:
1) No action in 1 second - turn to rest mode
2) No action in 8 minutes - turn to sleep mode
3) Receiver unplugged or computer off - turn to off mode
 

Usb plug and play