For iPhone4 Battery Case

Features:

1.1900mAh Battery.
2.Fully enclosed protective case.
3.Ultra slim dimension!
4.Protective circuit for over charging,over using and short circuit.
5.Smart power indication.

 Specifications:

Cell type: Li-polymer battery
Input: DC 5V 500mAh
Output: DC 5V 500mAh
Capacity: 1900mAh
Product dimension: 126 x 63 x 16mm
Product weight: 66.5g
Standby time: Up to 230 hours
Talk time: Up to 6.5 hours on 3G network/Up to 10 hours on 2G network
Internet use: Up to 5.5 hours on 3G/Up to 8 hours on Wi-Fi
Audio play: Up to 30 hours
Video play: Up to 8 hours