Grab some power for Prom--literally--with this Round Glow-in-the-Dark Power Bank as a custom Prom favor. A smart choice for tech-savvy students, this 3 3/4" long x 1" diameter power bank is small enough to fit almost any purse, backpack, or gym bag. Your choice of full-color imprint will be printed on one side of the power bank; personalize it for Prom, Homecoming, Senior Party, or for student awards! The best part of this tech accessory is that it glows even when it's not charging a device! The Round Power Bank is 2000 mAh capacity; has 5.0 V 1A output; and is UL certified. The Bank charges most small portable devices and includes a micro USB power cord and rechargeable lithium battery.