Now you can talk longer, listen to more music, play more games, watch more videos without worrying about running out of battery life with Verbatims Power Pack Chargers! Use the Power Packs to charge a wide range of devices such as iPhones, iPods, eReaders and micro-USB charged phones or wireless Bluetooth headsets. No matter the device, Verbatim has a solution for you!Key Specifications:AA Power Pack Anytime Charge! Now you can talk longer, listen to more music, play more games, watch more videos without worrying about running out of battery life if your phone or other device is running out of power just add 4 x AA batteries to the power pack, connect and keep going longer and longer.Ultra-Slim Portability Easy to carry! Fits easily in a pocket or bag, the perfect size for taking with you when traveling. Rubberized, lightweight and slim form factor makes it convenient to carry in case of the need for emergency power.Universal Power Charge it all! Use the AA Power Pack to charge a wide range of devices such as iPhone, iPod, eReaders, Smartphones, wireless Bluetooth headsets and more.Measurable Power Know the status! Use the push-on/ auto-off button to switch on the device and the LED power status indicator to gauge how much charge is availableGeneral Specifications:1200mAh Lithium PolymerInput (USB): 5VDC, 1A MaxOutput (USB): 5VDC, 1A MaxBattery Capacity: 1200mAh (4.5Wh) MaxPhysical Size: 80 x 62 x 10mmWeight: 50g (0.110 lb)Battery Cycle Life: 500 timesLithium Battery Voltage (Volts): 2.7Number of Lithium Polymer Cells: 1