Melasta 10000mah Portable Power Bank Dual USB External Battery Charger for iPhone 6 Plus 5S 4S, iPad Air 2 Mini 3, Samsung Galaxy S6 S5 S4 Note 4 3, HTC One M9, Motorola, Gopro and more 2.1A(fast charge)/1A Output & 2A input,dual USB output ports for charging two devices at one time. Exclusive smart technology: charge faster and smarter than others, automatically detects and delivers the optimal charging current for any connected device- ensuring the fastest and most efficient charge. Charging an iPhone6 over four times, a large capacity phone like the Galaxy S5 two and a half times or most tablets at least once, etc. Intelligent LED Light: Automatically charges your devices when it is inserted, auto-detect technology bringing you convenient experience. 12 month Worry-free warranty and friendly customer service.