Premiertek Bluetooth Keyboard for PC Windows/Android/MAC(BK-01S) Works with Bluetooth enable devices Window PC, Mac OS X, iOS (iPad, iPhone), Android Bluetooth V3.0 On/Off switch Plug-and play Power: 2 x AAA battery (Not included). Weight: 10 oz. Dimensions: 11" x 4.7" x 0.8 (285mm x 120mm x21mm)