... battery pack It is a rechargeable backup battery 4400mAh Lithium-ion battery. Specification:1) Battery capacity: 4400mA/3.7V ( ... , six connectors: Sony ericcson, Nokia,Micro USB, iphone, PSP) 6) 4400mAh Capacity buildin battery can charge two times of your mobilephone ... power x1pcs, USB cable x1pc Product Size Product Weight 170g 4400mah portable battery pack