Logitech Wireless Touch Keyboard K400 Plus

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: 33 ft (10 m)