The Mophie protective case with built-in battery provides extra power and protection for your iPhone 5 or iPhone 5S. It can provide nearly twice the battery life of your iPhones original battery! Use the power exactly when you need it -- hit the switch to activate power at the press of a button. LED indicator lights let you know when the unit is charging and how much juice youve got left. The sleek and polished look of the cover adds style and extra source of battery power for all your talk and travel needs. Get more power and style with Mophie!