1800mAh Rechargeable Portable iPhone Backup Battery for iPhone 3G 3GS Black

This 1800mAh Rechargeable Portable iPhone Backup Battery for iPhone 3G 3GS is specially designed to charge Apple iPhone 3G and 3GS that can power your iPhone at anytime. Its perfectly design can protect your iPhone and it can transfer data and charge iPhone at the same time. The operation is very simple. Just plug your iPhone into the external battery, then you can operate your iPhone as usual. What's more, you can sync your iPhone to iTunes without removing it from the external battery.
With this external for iPhone 3G/3GS, no matter where you are and when it is, you can easily charge your iPhone 3G/3GS. It's portable due to its compact size and light weight. And you will love the convenience of being able to charge your iPhone any time you want, anywhere you go. Plus, it can enhance the signal of iPhone 3G/3GS. It can be used as a emergency charger, a backup battery and a signal enhancer at the same time.
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Features:
* Smart battery
* Light weight, thin design
* Non-slip comfortable grip
* USB micro charge and sync
* Rechargeable lithium polymer battery
* Talk Time: up to additional 6 hours (3G network)
             up to additional 7 hours (Wi-Fi)
* Internet Use: up to additional 6 hours (3G network)
                up to additional 7 hours (Wi-Fi)
* Standby Time: up to additional 380 hours
* Audio playback: up to additional 28 hours
* Video playback: up to additional 8 hours
* Capacity: 1800mAh
* Cell Type: li-polymer battery
* Output voltage: 5V
* Output current: 700mAh max
* Cycle life: 500 times
* Dimension: 110mm*63mm*18mm

Package Contents:
1 x 1800mAh Rechargeable Portable iPhone Backup Battery for iPhone 3G 3GS Black
1 x USB Cable
1 x User's Manual