This 2-in-1 Charger and Back Up Battery - Works with iPhone, Made for iPod - makes sure you'll never unexpectedly run out of power again. The system features a high capacity 1000mAh polymerized lithium-ion battery that provides up to 30 hours of additional music, 6 hours of video or 3 hours of talk time. Included is a USB charging cable and USB AC adapter which can be used to charge the iPhone/iPod and battery pack simultaneously. The 2-in-1 Charger and Back Up Battery is compatible with iPhone, iPhone 3G, and all iPod models with a 30 pin connector.