Product Reference: 21128
The mophie Juice Pack Air is a rechargeable external battery concealed inside of a protective form-fitting case for the iPhone 3G. It offers you the full protection of a hard-shell case while providing almost twice the battery life of the iPhone alone.
Its ultra-thin, lightweight, low-profile design houses a rechargeable 1200mAh lithium polymer battery for up to 270 hours standby time. The case allows USB charging and sync with iTunes as well as full protection for your iPhone 3G.