1.portable external backup battery 2.Emergency battery 2.Capacity:1900mAh 3.Nice for gift 4.pocket size clip back cover mobile cell phone black case slide bushing case protector for Iphone 4 Features:1. Iphone backpack2. LED light function to show power status3. Over-charge protection, Discharge protection, Over-current protection, Short circuit protection, Explosion protection4. Powerful with long operation time, Portable and convenient5. High efficiency of power conversion6. Electricity-saving function, User friendly7. Long cycle life, Rapid charge

 Specification:

 1. Cell type: Polymer battery

2. Output capacity:1900mAh

3. Input: DC 5.0V

4. USB Output: DC 5.0V

  packing:

 Color  box

clip back cover mobile cell phone black case slide bushing case protector for Iphone 4