Mophie iPhone 4/4S Juice Pack PRO Battery Case

The Mophie Juice Pack Pro for iPhone 4/4S is a durable case that protects one’s phone from rain, sand and impact whose added functionality comes in the form of a 2,500 mAh battery that more than doubles the battery life of the phone. Featuring the rugged exterior like the ever-popular Otterbox, Mophie’s version utilizes USB cables which allow simultaneous charge and sync, as well as an on/off toggle switch lets you choose between standby and charging mode. The Juice Pack PRO has been tested to exceed the standards for impact protection and dust/sand penetration set forth by the United States Military and can be purchased online for $130 USD.