DescriptionModel: FBK25Operating Range: 5~10 MConnection: Bluetooth / 2.4GMulti-Device: 4 DevicesLayout: Windows |Android|Mac|iOSBattery: 1 AA Alkaline BatteryBattery Life: about 650H (12 Months)Receiver: Nano USB ReceiverNet Weight:468 g (w/ battery)Includes: Keyboard, Color Plate *3, Nano Receiver..