So, you broke down and bought the iPhone 5, thrilled to finally experience the jaw-dropping speed of LTE data transmission on an Apple device. On your way to work the next day, you streamed your three favorite James Taylor albums with Spotify; beside the coffee maker, you looked up the signs of caffeine addiction on WebMD; and during your lunch break, you watched the latest episode of Downton Abbey in full HD. Halfway through the episode your eyes drifted from Lady Mary's well-bred countenance to the battery indicator and--gasp!--a mere 13 percent?! Even the iPhone 5's long-lasting battery, it turns out, is quickly overcome by the needs of such rapid data transmission. But fear not! With the iPhone 5 External Battery Case (2200 mAh), you and LTE can together jet onward into the future, unencumbered. This remarkably thin, ergonomic, durable, and stylish case packs hours of extra life for your iPhone. Utilizing a breakthrough Lithium Polymer battery, the iPhone 5 External Battery Case charges simultaneously with standard charging and data transmission and can be turned and on and off for maximum battery conservation.