Connection Type: Logitech Unifying protocol (2.4GHz)
Special Keys: Mute, Volume Down, Volume Up
Connect / Power: On/Off Switch
Battery Details: 2 x AA
Battery Life (not rechargeable): Up to 18 months
Key life: Up to 5 million keystrokes
Typing noise: Within 55 dBA for all keys
Wireless range: 10 m (33 ft)