1) Ergonomic, form-fitting, fully protective ultra-resistant case and battery in one for your phone 
2) Integrated power switch allows you to switch on/off the battery case, only use the battery when you need it 
3) Use rechargeable lithium polymer battery 
4) State of the art battery technology extends the life of your phone for hours 
5) Check the power status at a glance with an integrated 4 LED light status indicator 
6) It allows you to charge and sync your phone while refilling your battery at the same time 
7) Built-in short circuit and over-charge protection 
8) Capacity: 2200mAh 
9) Cycle life: 500 cycles 
10) Input: DC 5V / 500mA 
11) Output: DC 5V / 500mA 
12) Charging time: 5 hours 
13) Dimension: 136mm (L) x 63mm (W) x 14mm (H)