Boost 4500 can charge smartphones, tablet and many other 5V electronics devices. It is equipped with 2 universal USB ports so users may simultaneously charge their smartphone and tablet. With nearly 3 full charges to an iPhone 5s and LED flashlight functionality, the Boost 4500 is chicly designed for going out for the weekend with friends.With WYSIWYG capacity users can expect roughly 50% more power than other brands of the same capacity.SpecificationCell Capacity : 6000mAh 3.7VRate Capacity : 5V 4500mAh (22.5Wh)Output : 5V 2A + 1AInput : 5V 1AColor : White, BlackDimension : 65x120x16.5 mmWeight : 169gCertification : CE, FCC, RoHS, MSDS, UN38.3