Emergency Power Pack Battery for iPhone 3G

Features：
- Built-in USB cable.
- Free USB Charging/ Data transmission cable.
- Automatic tests iPhone/ iPod function.
- Supports iPhone, iPhone 3G, iPod. Please note this back-up battery does not support iPhone 3GS.
- 4 LED shows charging status.
- 1 button tests power.
- High quality Li-ion Cell.
- Can recharge up to 1000 times.

Specifications:      
- Input：5V/500MA
- Capacity：1000MA
- Output：5V/500MA
- Charging time: Around 2 hours through travel charger for iPhone. Around 4 hours thorough USB charging cable for iphone.

Package Includes:
1 Back-Up Power