vitalASC KB10KA-M Ultra Slim Bluetooth 3.0 Keyboard for Andriod Mac Windows Normal Keys: 83 Function Keys: 19 Power Supply: Smart Power saving Distance: up to 33 ft ( 10m) Operating System Supported: Mac, Ipad , Android , Windows System Requirement: Compatiable with Any HID ( Human Interface Device ) profile Dimensions: 10.1x5.04x0.25