This UL listed round charger with wrist strap will have your brand strapped in for its next marketing campaign! Measuring 4 3/4" and available in several colors, this handy item features a 2200 mAh lithium ion grade-A non-recycled battery, a USB output and a micro USB input (cord included). Output: 5 volts/.8 amps. Your device's charging cord is required for use. Customize with an imprint of your company name and logo to maximize brand exposure on a desirable giveaway.