4g backup battery

Specifications 1900mah

External battery for iPhone 4

Petite, convenient, easy to use, high capacity

4 LED power ind

Capacity:             1900mAh
Input:                    DC5V/500mA
Charging time:    4 hours
Standby time:      Up to 230 hours
Talk time:             Up to 6hours on 4G
                               Up to 12hours on 2G
Internet Use:        Up to 5 hours on 4G
                               Up to 8 hours on Wi-Fi
Audio play:            Up to 30hours
Video play:            Up to 8 hours
Dimension:           126(L)X63(D)X15(T)mm