External backup battery for iPhone4 and iPhone 4s

Talk time -up to 6 hours Internet Use-up to 5.5 hours on 3G Up to 8 hours on WI-FI Audio Playback-up to 30 hours External backup battery for iPhone4 and iPhone 4s   

Model : BC1900

Main Features :

Capacity :1900mAHCell type :Li polymer battery Lithium-ionDimension :12.5 *63*16mmOutput Voltage:5VOutput current :500mACycle life :500 times

High-efficiency electronic products4 LED Display battery capacity

Quick charge    

Comfortable handfeel USB Port      

7 colours for opt

Function & character :Enhance Iphone4 signal Power check &indicationPower switchProtective and powerfulSignature :Standby time - up to 230 hoursTalk time -up to 6 hoursInternet Use-up to 5.5 hours on 3G &Up to 8 hours on WI-FIAudio Playback - up to 30 hoursVideo Playback- up to 8 hours

Packing :

Product dimension: 126 x 63 x 16mmProduct weight: 72.5g

Each unit in a blister gift boxGift box dimension:17x 10.5x 2.5cmGift box weight: 145gCarton dimension:48 x 35 x 34cm  Carton Weight: 16kgs  100 Sets/Carton

External backup battery for iPhone4 and iPhone 4s