Batterytec&reg; Mini 2400mAh Super Slim Portable Charger Power Bank Pack for iPhone 5S, 5C, 5, 4S, Galaxy S5, S4, S3, Note 3, Nexus 4, HTC One, One 2 (M8), Nokia Lumia 520, 1020, most other Smartphones Universal Compatibility: it is compatible with most mainstream Androit, Smarts mobile phones and tablets. Grade A Cell Used to assure you a highest quality and reliability. With LED to indicate charge level. Slim, Sleek, Compact, portable and stylish Design. Convenient to carry in your pocket or purse. 2400mAh,Output: DC 5V/1A; Intput: DC 5V/A. For a faster charging speed, you may use 10W adapter.