Details : Portable, compact and simplicity.
Equipped with 4 LED battery capacity indicator lights.
Plug-in design and very convenient to use.
Custom fit for the contour of iPhone 3G/3GS precisely.
Designed for use on the go or in an emergency.
Also suitable for preventing your cell phone from scratches and dust.
Extend the working time of your cell phone.
Built-in 2000mAh lithium battery.
Can use a USB cable to charge this battery.
Compatible with iPhone 3G/3GS.
Charging time: 3 hours.
Standby time: up to 390 hours.
Talking time: up to 6.5 hours on 3G/3GS.
Audio playback: up to 31 hours on 3G.
Video playback: up to 9 hours on 3G.
Input voltage: 5V.
Output voltage: 5V.