... design, beautiful and convenient appearance, light weight, built-in lithium battery, mini USB charging port, ready to charge for the host machine ... include:a. An audio input line,b. A mini USB to USB charging cable.Carton size:280*190*20 mm Weight:380gQTY ... -5 hours4. Audio output power: 4Ω3W * 2 super slim 3 in 1 (Wireless Bluetooth Keyboard+Aluminum Case+iPad2 Stand) Aluminum bluetooth keyboard ...