Features:
3G iphone Power
(Speaker+ charger+ data transmisstion)
Built in speaker
 

Specification:
1. Capacity:   2400mAh
2. Charging time: 3h
3. Discharging time (to iphone): 3h
4. Power of amplifier speaker: 1.5W
5. Voltage input:   4.8-5.5V
6. Current input:   500-1000mA
7.   Voltage output: 5.0-5.5V
8.   Current output: 100-1000mA
9.   Quiescent power drain: 50uA