... sync with USB2.0 interface 2,charging fucntion 3,400 mAh backup battery 4,LED light 5,Ultra thin design, ... portable Item #:MP-028Item Name:3 in 1 Ultra Thin Card Battery Features 1,Data sync with USB2.0 ... capacity,which can supplement 15% power capacity for iPhone. 3,Allows you to charge your iPod, iPhone, iPad when ... 56×5.5mmIput interface:USB2.0Input voltage: DC 3.0~6VOut: DC 5V 1A More images: