Fuel holster for iPhone4G Built-in 2200mAh Li-Polymer battery. Rotatable belt clip on the back of case to fully hang up USB p Fuel holster for iPhone4G Built-in 2200mAh Li-polymer battery.-Rotatable belt clip on the back of case to fully hang up -With turn on/turn off function to control charge or no charge your device -USB port for charging

Fuel holster for iPhone4G