Here is another leather case for your iPhone. Comes with a built-in Li-ion 1.800 mAh PowerBank Battery, this 2-in-1 leather case only suitable for iPhone 3G version. Built-in battery can be charged through USB connection and can supply power around 15 hours for music playback, 4.5 hours for video playback, 3.5 hours for communication, and 3.5 hours for internet with total 39 hours usage.

This product can be reached through GeekStuff4U and will cost around $112.77

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