... light weight, built-in lithium battery, mini USB charging port, ready to charge for the host machine.•3.Product size: 246 ... flexible, hands free, aluminum mount holder Working parameter 1.The battery nominal capacity: 3.7V/600MAH2. Charge current: MAX: 500MA3. Charging ... hours4. Audio output power: 4Ω3W * 2 super slim 3 in 1 (Wireless Bluetooth Keyboard+Aluminum Case+iPad2 Stand) Aluminum bluetooth ...