Adesso 2.4Ghz Wireless Scissor Switch Desktop Keyboard - Wireless Connectivity - RF - 30 ft - 2.40 GHz - USB Type A Interface - 104 Key(s) - 7 Hot Key(s) - Multimedia, Internet, Play/Pause, Stop, Next Track, Previous Track, Volume Down, Mute Hot Key(s) - Windows 7, Mac OS X 10.6 Snow Leopard - English (US) - PC, Mac - Scissors Keyswitch - AAA Battery Size Supported: