If you are a person who never let your iPhone 3G remain idle like the way I do and also are anxious about the device durability, we finally have a solution. Juice Pack Air from Mophie is all that we would need to keep the iPhone awake for extra hours and also keep it safe from wear and tear.

Well, Juice Pack Air is a rechargeable external battery embedded in a hard-shell case specially designed for the iPhone 3G. This combo pack would give you about 5 hours extra talk time and internet usage, up to 20 hours if you want to play only audio and a rough 6 hours if you play video in a stretch. With dimensions of 4.9 inches height and 2.59 inches width, this combo pack perhaps would be the thinnest iPhone battery manufactures so far and the coolest case one can dream of.

The case is retailed at $79.95 and would be available in black, purple, white, etc. Pre-order for the product would be shipped by April 30th according to the manufacturer. Some of the features of this special combo pack are:

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

If you want to be an early adopter, you can place your order now.