A very much unique and different looking battery case by Incase for the iPhone 4. The Snap Battery Case features a 900mAh battery for up to 40% extra battery life all in a very slim form factor. The Snap Battery Case is made out of a durable hard shell with a matte soft-touch finish and most surprisingly of all an integrated 30-pin Dock Connector. On the back are white LED battery indicators that tell you how much juice is left as well as an on/off button. The Incase Snap Battery Case for the iPhone 4 is now available in black for $59.95 on Incase's website.