... 2.Model:EM-6600 3.Capacity:6600mAh 6600mAh portable universal dural USB 5v li-ion battery pack for iPhone 4 and iPad SpecificationsWeight: 250gCapacity ... ,MP4, PMP, GPS, Bluetooth, digital cameras. usb 5v battery portable power portable battery pack 6600mAh portable universal dural USB 5v li-ion battery pack for iPhone 4 ...