Double your iPhone''s short-lived battery and go for more than a full day away from an outlet. When you do need to plug in, simply connect the included USB cable to a charging port to simultaneously charge both internal and external batteries. And, with full MFI Apple certification of the Lightning connector, no need to worry about incompatibility or harming your phone. Protection made perfect. Only doubling the iPhone''s thickness (adds 0.37in), the reinforced industrial-grade plastic case creates prime protection for your prime phone. Precise cutouts around buttons and camera, microphone pin holes, and an audio jack extender keep everything fully accessible. We''ve even enabled charging and data transfer through the micro USB port. Now that''s perfection.