battery case for iphone 3GS, case for iphone,protectional case for iphone 3G,Leather Case for iPhone 3GS battery case for iphone 3G, case for iphone,protectional case for iphone 3G,Leather Case for iPhone 3GS TECHNICAL DATA1 ... capacity of 2000mAh Li-polymer battery, you can enjoy playing your IPHONE, IPHONE 3G, IPOD ... IPHONE screen can be durable in use.4.You can use hanging wire for your IPONE, IPHONE ...