Get plenty of on-the-go power anytime with the lightweight battery bank case. This award-winning, rechargeable external battery case adds more than 100% additional battery while its smooth leather like finish yields unmatched style and protection to complement your Iphone. Rigorously tested with Apple to receive "Works with iPhone" certification. It's so easy to use - just press and hold the power switch to turn the battery power on and off, and press it once to see the battery's status. Charge case with your lightning cable.