Gigablock Power Bank 4200mAh For all Smartphone and Cellphone Charging. Small Slim Beautiful and Durable For Apple iPhone 4 S, Samsung Galaxy S 3, Note 2, LG, HTC Evo, Nexus, Blackberry, Motorola Droid Portable Power backup Charger 4200mAh Output: DC 5V 1A, Input: DC 5V 1A FCC Certified: Certificate #: MTI121019002CF CE, UL, ROHS Certified. Lithium ion Polymer Battery with Genuine Samsung New Cell