Heavy duty aluminium powerbank with 18.000 mAh high quality lithium polymer battery. With double USB port to charge two devices at the same time. One 2.1A USB port suitable for tablets and another 1A output suitable for mobile phones. Can charge a tablet up to two times and a mobile phone up to 6 times. 18000 mAh capacity Output: 5V/3.1A, input 5V/1.5A. Including micro USB cable.