USTOP New Black 13000mAh External USB Battery Charger High Capacity Power Bank Motorola droid/ GPS /for cell phones 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 Whenever you need to charge your mobile devices wherever you are. High quality Lithium-ion battery ensures reliability