This power bank ensures that your devices will never run out of battery. They are best used in areas where there is no power. This product's outer body is made of aluminum alloy shell and the inside body has a plastic lining. It has a 2200 mAh charging capacity. There is a USB cable which comes with this product that allows you to charge your phones everywhere. It has one USB port and one charging port. Not every power bank can be as portable as this product. Its sleek design helps you to carry it in your pockets easily.