This is a protective case for iPhone 3G,
it has changeable built-in Li-Ion battery 1900mAh for emergency charge.
Fashionable appearance design. provide the electrical energy support
Mobile Portable Power for iPhone 3G - FC5
*Protective case for Iphone 3G *Changeable built-in Li-ion battery 1900mAh for emergency charge *USB cable to connect PC & Iphone 3G, Charge iphone or Li-ion battery, Data transmission between Iphone 3G & PC