portable mobile power, power your iphone anytime

portable mobile power, power your iphone anytime,double your iphone battery life. Specification: Capacity: 1700mAh Input: DC5V/500mA Charging time: 4 hours Standby time: Up to 360 hours Talk time:Up to 6hours on 3G Up to 13.3hours on 2G Internet Use: Up to 6 hours on 3G Up to 10.6 hours on Wi-Fi Audio play:Up to 36hours Video play: Up to 10.6 hours Dimension: 124(L)X65(D)X17(T)mm Color:blue,black,pink,gray,white. Fitting: 1 PCS charging cable Fuction: iphone4 type of Back clamp battery. 1. External battery for iPhone4. 2. Small, convenient, easy to use, high capacity. 3. Use USB cable to iphone4 charge. Features: 1.Perfect solution to charge your iphone4 when out with this portable power station. 2.high capacity Li-polymer battery unbinds you from the worry of power shortage of your iphone. 3.Unique holder design,very simple,very light and convenient to acrry and use your iphone when charging,easy to access to the phone's fuction . 4.Intellectual protection chip:protection for overcharge,overdischarge,overload and short circuit protection. 5.This battery is the best partner whth iphone.