battery case for iphone 4 4S 1700mah battery Full protection case for iPhone Precise Molding Made for iPhone approved

Specifications--Compatibility:iPhone 4 4S --Capacity:1700 mAh (Li-Pol)  --Output voltage:5V --Output current:500mAh --Input Voltage:5V --Input current:500mAh --Charging time:3hours --Material:High quality ABS --Weight:75g --Product dimension:127(L)×62(W)×16.5(T)(mm)--Talk time:Up to 6.65 hours on 3G; Up to 13.3  hours on 2G (GSM model only) --Standby time: Up to 285 hours --Internet use: Up to 5.7 hours on 3G; Up to 7.5 hours on Wi-Fi --Video playback: Up to 9.5 hours --Audio playback:Up to 38 hours

Key Features--Built-in rechargeable lithium-ion battery--Charging via USB to computer system or power adapter --Adherence to hardware testing standard of iPhone --can be used as a protective case --solution to IPhone 4 signal problems --Functional connector for data transmission. --On/off power switch design enabling securer and longer use of backup battery --Superb LED power indicator                

   

Battery Case for iPhone made for iphone approved