Brand new external battery case for iPhone 4G. The built-in high volume 1700mAh battery adds extra 10 hours talking time to your iPhone. Never Lose connection with friends and families with such a great backup power source. It offers a full body coverage and separate your palm from the iPhone dead spot. You will never lose any signal with the case on the phone. This durable case is designed to perfectly fit iPhone 4 and it offers a full body protection against any shock and scratches on your beloved gadget. The Blue 4-LED power indicator will accurately display the remaining energy inside the case, whenever you press the only button on the back of the case.