1.1900mah external battery charger case for iphone 4 2.Portable and durable 3.CE,FCC,RoHS 4. Standard USB port 5.with stand

for iphone 4 backup battery

1.Ultra thin external power pack for iphone4/Iphone4S: only 15mm               

 2.Compatible with iphone4 and iphone4S  

3.Strong, durable engineering material: Protects iphone4 from bumps & scratching and non-slip coating , very  fashionable and touch well                     

4.Precise moulding: Fit iphone4/iphone4S perfectely

5, convenient  to use with stander

6, it can charge at any time, any place                           

7.Craft: Spray Rubber oil or UV oil                   

8.High capacity: Doubles stand-by time of iphone4                    

9.Certificates: FCC/CE/RoHS

6.Capacity: 1900mAh

7.Battery: Lithium-ion

8.Input: 5.0V/500mA

9.Output: 5.0V/500mA

10.Dimension: 123.8x60.8x15mm

11.Weight: Approx. 53.5g

12.Standby Time: Up to 240h

13.Talk Time: Up to 5h

14.Internet Surfing: Up to 5h

15.Wi-Fi: Up to 8h

16.Audio Play: Up to 30h

17.Video Play: Up to 8h

This is battery is perfect for iphone4 and iphone4s.You can use it as a case and a battery. You can charge it at any time any place. Very convenient.Do your own design on it also ok.and we can silk your logo.It's the world's thinest battery with 1900mha.

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