External Backup Battery Charger for iPhone 2G.3G.3Gs.iPod Touch

keeps your iPhone playing by letting you power your iPhone even when your internal battery is drained.
It's a great solution for long flights, hikes, or for anytime you don't have access to an AC outlet.

Specifications:

• Battery type: Lithium-ion batterty
• Input: 5V 800mA
• Output: 5V 500mA max
• Capacity:1900mAh
• Charge time: 4 hours
• Weight:55g
• Dimension:67x62x15 (mm)

Compatibility: Apple iPhone 3Gs.3G,2G (1st generation), iPod Touch/Video & Nano

Prize 15$.At UFO2 Phone Shop