Mini 2.4G Multi-functional Wireless Keyboard For Raspberry Pi Feature: Color: Black or white (choose the color you want) Interface: USB 3.0 , USB 2.0 , USB 1.1 Wireless: 2.4G Wireless Tracking Method: Touch Pad Operation Distance: 10m Key Force: 100GF Key Travel: 2mm Anti-ghosting Key: 3 Multi-media Key: 12 Battery included ，for some country battery is not easy for shipping . Power Consumption: Battery Type: 2 x AAA Battery; Operational voltage: 3.3V. Waterproof: no Other Features: Supports System Win xp , Linux , Android 2.x , Android 4.x , Win 2000 , Win 2008 , Win vista , Win7 32 , Win7 64 , Win8 32 , Win8 64 , MAC OS X Package included: 1 x Wireless Keyboard 1 x English user manual