This is the latest iphone4 4S case battery, ultra-thin design and perfect dimensions, with fashionable leather pattern, Also it is very light only 58g, convenient for you to carry. It can not only charge for your mobile, but also can protect your phone from scratching. Two functions in one, but only equals a phone cover's price.
This external backup battery is perfect to provide power for iPhone 4 4S anytime anywhere.
External battery charger case for iPhone 4 4S 4G.
Works as both an extended iPhone battery set and a protection case.
Protective and powerful.
Suitable For: iPhone 4 4S 4G
Cell type: Li polymer battery Lithium-ion
Input: DC 5V. 1Ah(max).
Output :DC 5V. 1Ah(max).
Talk Time: Up to 6 hours
Internet Use: Up to 6 hours on 3G & Up to 7 hours on Wi-Fi
How to use:
Put the back round button for 3-5 seconds. Then leave the button, the light is flashing shows charging.
1 x External Battery Case for iPhone 4 4S 4G
Note: the iPhone is not included.