EPCTEKNew White 5000mAh Cell Phone Portable External Battery Power Bank Backup Charger Pack for iPod, iPad, Mini; Samsung Galaxy Note & Tablets, S4, S3, S2, Nexus; HTC One M8 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 trainroad trips, or whenever you need to charge your mobile devices wherever you are. High quality Lithium-ion battery ensures reliability; Please feel free to contact us if you have any question after bought it