1900mAh for iphone4 battery case Capacity:1900mAh Various color for your chose Smart design Fashional 1900mAh for iphone4 battery case 1) Battery capacity: range from 1000-2000mah optional (Polymerl Lithium-ion battery) 2) Compatible with all generations iphone,ipod,ipad,etc 3) Output: 5V 500mA each. 4) Input: 5V/500mA 5) UV unti-scrach surface, Low-Profile design 6) Four Led light indication, ...