DX-4 Battery Case (1700mAH) - iPhone 4/4s

Size is EverythingHighlighted by its lightweight, ultra slim design, the DX case measures an impressive depth of just 17mm. The sleek protective case is made to fit snuggly and enhance the iPhone 4/4s natural look while still producing astonishing power and functional design. Extended Battery LifeEquipped with a 1700mAh battery cell the DX almost doubles the life of an iPhone 4/4s. The additional power yields six hours of talk-time, 30 hours of music playback, and a hefty 240 hours of standby time. Technologically AdvancedMade with state-of-the-art technology, the DX exhibits a battery which almost doubles the lifetime of the iPhone, allows users to sync and charge with the case equipped, and view current battery levels via the LED battery level indicator. Form and FunctionWe designed the DX to not only be stylish but effective. It enhances the natural acoustics of the phone while providing an unobtrusive shield of complete protection. The ultra-slim case makes it ideal for on-the-go u