EPCTEK&trade;New Black 12000mAh USB Port External Charger Portable Power Bank Battery for Mobile Phone Droid, Google Glass, Nexus 4, Nexus 7, Nexus 10 LG G2 LG Fit for your iPhone 4S / 4G / 3GS/Samsung Galaxy S4 / S3, Nokia and other smart phones; Compact, portable, Sleek, stylish and compact design; Easily fits into your bag to provide instant power; PERFECT for train,road trips,or whenever you need to charge your mobile devices wherever you are. High quality Lithium-ion battery ensures reliability; Input: 5V-1A(Max),Output: 5V-2.1A(Max)5V-1A(Mini)