IMP500 A iPhone 3G 3Gs iPod touch External Battery 2nd Generation Last 38 Hours work for 3Gs iPhone
The IMP500 extended battery pack can give your iphone a boost of up to 38 hours of extended battery life just by plugging it in. If your out camping or anywhere that does not give you access to a car charger or outlet this is the perfect accessory to help you stay charged.
