Power Bank, POCKETVOLT BONE Power Bank 5200mAh 1 Amp Portable Power Bank BLACK Built with a Samsung Battery. Powerful 5200mAh external mobile battery charger keeps your digital devices always powered Quickly and effectively solves the low power problem for your devices while on-the-go Designed with a 5V 1A output USB port, universal fits for iPhone, iPod, Samsung devices, and most cell phones Built-in LED indicators to show the charging status and battery level, safe to use