Genesis 4000 Power Bank &ndash; Mobile Universal Cell Phone Battery Charger For Your Apple iPhone, Samsung Galaxy, Verizon, AT&T, Sprint Phones &ndash; Battery Backup Multi-purpose Power Bank For Laptops and Tablets &ndash; Powerful 4000 mAh 4000mAh Capacity for quick cell phone charging Lightweight  4.6 ounces makes this Power Bank a must for travelers and people on the go Stylish design makes the Genesis 4000 the choice for busy people around the world Five LED power indicator lights to show battery level and charging status.Dual charging USB ports lets you charge two devices simultaneously Order today to be prepared for when your phone decides to go "dead" in the middle of the day or at the most inopportune time. Order one for a friend, they will love you for it!