The Third Rail iPhone 4 case will protect your phone and charge it all at the same time. You won't even notice your phone is charging with the slim-fit casing.
How often have you run out of battery power at the worst possible time with no charger in site? With the Third Rail iPhone 4 case, you won't have to worry about a low battery or if your phone falls to the ground. The slim case offers both protection and efficient charge to keep you satisfied and in touch no matter where you are.
Unlike most battery-powered cases, this piece of tech is small and efficient. With a smart circuitry unit and compact design, the Third Rail iPhone 4 case will make sure your phone will be super-charged and always protected.
Third Rail iPhone 4 Case Provides Charged Protection For Your Phone
Jamie Danielle Munro — May 13, 2011 — Tech
References: thirdrailmobility & coolhunting