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