POWERBANK 5000mAh Super Ultra Slim Power Bank USB Portable External Battery Charger for iPhone Samsung Galaxy HTC Motorola Moto Android Smartphone Phone iPad Tablets PC Bluetooth (Silver Color) High efficiency rate, charges your iPhone twice and comes with enough power to charge most other large capacity smart phones like the Galaxy S4 in a compact 2.1A output charges your devices more rapidly. Build-in flash light. Aluminum ultra thin body design, to ensure lightweight and durability. Stronger features than a high-capacity battery that slides into your pocket where you go, so you can power up anytime and you are good for the day. Unique HIGH INPUT design, use 5v/1A for faster charging time with the least amount of time it will fully charge your device. Output: 5v/1A 5v/2A Li-Polymer cells, constructed with Li-Polymer battery cell and build-in microchips to ensure safety, and provide you full-speed charges. Protective functions: short circuit, over charge/discharge, over-load. This is a nice charging device that will keep you going and never let you down in case in an emergency. A nice gadget to have while in a plane, outdoor activities, concerts, ballgames etc. where a charging station is not readily available.