The Mophie Juice Pack Air not only protects your phone, it also ensures a longer battery life. The cover has a built-in battery, so your phone can last up to 30 hours in total. Ideal for example on holidays or a festival. Charging is done via a micro USB cable or simply via wireless charging. The sturdy rubber case also keeps your phone free from scratches and dust. The Mophie case has a slim design, so despite the built-in battery, the case fits easily in your hand and does not look too bulky. Below are LED lights that indicate how much energy your case has.