Give your Apple iPhone 3G or 3GS protection and power with the Case-Mate iPhone 3G / 3GS Fuel Lite Rechargeable Battery Case. The silicone case will prevent dust, dirt and scratches from accumulating on your phone, keeping it looking good as new. The built-in battery provides additional power to your iPhone 3G or 3GS. LED battery status lights on the back let you know when your battery is in need of a charge. A simple touch of the power button allows you to control when your Fuel Lite Case provides power to your phone.