Charge up your next promotional campaign by handing out this UL-listed On-The-Go Portable Charger! Measuring 3 3/4" and available in several colors, this handy tool features a 1500 mAh Lithium Ion Grade A non-recycled battery, a USB output, and a micro USB input (cord included). A red LED light indicator tells you when it's charging. It requires your device's charging cord for use.