Mophie Juice Pack Air for iPhone 3GS / 3G

The Mophie Juice Pack Air is a rechargeable external battery concealed inside of a protective form-fitting case for the iPhone 3G/3GS. It offers you the full protection of a hard-shell case while providing virtually twice the battery life of the iPhone alone; all in an ultra-thin, light-weight, low-profile design.

Features

• The world’s thinnest Apple certified “Works With iPhone” external battery for iPhone 3G/3GS!
• Rechargeable 1200mAh lithium polymer battery essentially doubles your time to rock, talk, surf and send.
• Pass-through USB charging and sync with iTunes
• Extended smart battery and full case protection
• On/Off switch offers choice of battery or case
• Integrated 4 LED charge status indicator