External Portable Power Source Battery/Charger for iPhone 2G 3G 3GS
Compatible with: iPhone 3G/3Gs 8GB/16GB/32GB, iPhone 2G 4GB 8GB 16GB, iPod Touch 1st -3rd Gen, iPod Nano, iPod Classic, iPod VideoSpecifications:Battery Type: Lithium-ion batteryBattery Capacity: 1900 mAhInput Voltage: 5.5V +/- 0.5VOutput Voltage: 5.0V +/- 0.5VInput Current: 500mA MAXOutput Current: 800mA MAXDimension: 67x62x15MMWeight: Approx. 48gCharge Time: Around 2 hours* LED indicator for charging* LED indicator for battery power level* No memory effect, Li-ion battery built-in* Charged via the computer or AC adapter with the USB cable, easy to take and charge* Color: Black* Compatible with iPhone, iPod series