New Mophie Juice Pack Air for the iPhone 4 is available only at Apple Stores for $804
Available only through Apple Stores for $79.95, the Mophie Juice Pack Air doubles as a case and battery charger, but what separates this new version from the one before it, is the fact that it now offers a cutout below the case for easy access to its dock connector. On the previous model, it was totally closed off and you needed to rely on a built-in microUSB port on the case to charge or connect the handset to a computer. Moreover, the top edge is almost completely exposed to accommodate even larger headphones.
condensed 1,500 mAh lithium polymer battery, which should offer about 6 hours of talk time on 3G or 36 hours of audio playback. Unfortunately, as we mentioned already, you can only pick up this new model through an Apple Store – you can’t even order it through Mophie’s own web site! So if you really want one, you’ll need to track down the closest Apple Store to your location.
source: Mophie via Intomobile