1.Power your iphone4
2.Pretect your iphone 4 from scratch, dust.
3.Standby time: Up to 300 hours

Specifications:

1.Power your iphone4
2.Pretect your iphone 4 from scratch, dust.

3.Battery Capacity: 2400mah      

4.Weight:95gs                                    

5. Cycle life: 500times

Charging via USB to computer system or power adapter      

1.Talk time: Up to 7 hours on 3G        

2.Up to 14 hours on 2G      

3.Standby time: Up to 300 hours

4.Internet use: Up to 6 hours on 3G Up to 10 hours on Wi-Fi       

5. Video playback: Up to 10 hours     Audio playback: Up to 40 hours