Still be confused by the original battery inside the smart phone which cannot meet our daily need especially when you are enjoying yourselves but your digital products strike for the power. Do not need to worry about that any more. You can get this one to help you or you can regard it as a present for the one you care. 6600mAh capacity and DC5.0V output can meet almost digital products demands. And plus the free 8 interfaces you can use it freely! - Color: Black + White - Excellent for long trips and as an emergency backup when your Cell phone's battery drains on the go - Capacity: 6600 mAh - Output USB1: 5V 1A - Output USB2: 5V 2.1A - USB power connecting cable included - Adapters: Nokia small head / Nokia big head / Mini USB / Micro USB / Sony Ericsson D750 / Samsung D800 / Samsung D880