EPCTEK&trade;New White 12000mAh External Battery Backup Charger for iPhone 5,4S, 4, iPad 4, 3, 2, Mini, iPods, Samsung Galaxy S4, S3, S2, Note 2, Note 8, Tab 3;HTC One 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)