... , easy to use , high capacity Product FeaturesMini external power bank for iphone blackberry mobile phone and other digital productsMini convenient , ... easy to use , high capacityUse for usb cable to charge power bankFour LED power indicators Product Specification:Capacity: 2100mAh,3. ... *55*17mmCompatible Models: iPhone 3G/3GS,4G, Blackberry, Nokia, Motorola, Sony Ericsson, Samsung etc and USB Device