The stylish leather Power Case protects and powers your iPhone 3G with a built-in rechargeable lithium-ion battery capable of providing up to an addtional 36 hours of audio playback, 6 hours of video or 3.5 hours of talk time.  Compatible with only iPhone 3G.

Product Features:

• Compatible with iPhone 3G
• Built-in rechargeable battery charges and powers iPhone 3G
• ON/OFF switch lets you decide when to activate battery
• Stylish and protective leather flip-open case with magnetic closure
• AC Adapter included