The Mophie Juice Pack Helium is a battery and phone case in one, providing extra battery life when on the go. Integrated LED status indicates how much juice is left. Included USB cable charges the Juice Pack Helium and Apple iPhone. Built-in overcharge, short-circuit and temperature protection. Pass-through design and USB cable to charge and sync with iTunes without removing Apple iPhone from Juice Pack Helium. Form fitting for Apple iPhone 5S.