Product Description iFans battery cases continue to produce the most on demand charging solutions, providing you with power and protection for all-day, on-the-go use of your Smartphone. A one-piece silicone, soft-touch case slides and wraps effortlessly around your mobile device, while providing tough, shock-proof protection. With the touch of a button, PowerSkin instantly starts charging your phone. So charge on, without breaking stride, because battery life is life.MFi means "Made for iPhone" This battery charger has been approved by Apple which means it has been designed to connect specifically to the iPhone 5 and iPhone 5S, and has been certified by the developer to meet Apple performance standards. Products that are not MFi risk damaging the device.Specification: - Sleek and slim contemporary case provides a soft, thin, comfortable grip and protects against accidental drops - One-piece silicone rubber case allows for a quick on-the-go wrap, protect and charge - Rechargeable built-in 2400mAh battery extends Smartphone usage up to 70% - Verified engineering guarantees against short circuit and over-charge, and provides temperature protection for your battery case and Smartphone - On / Off button and LED indicator puts power-on-demand in your hand and provides on-the-go charging for your mobile lifestyle - Folding kickstand