Technical specifications:
. Compatibility: iPhone 3G / 3GS
. Battery: Li-Polymer battery
. Capacity: 1300mAH
. Output voltage: 5V
. Output current: 500mA
. Stand-by time: up to 240 hours
. Talking time - iPhone: up to 4 hours
. Internet use - iPhone: up to 4,5 hours
. Audio Play: up to 17 hours
. Video Play: up to 5 hours