Available in four fun colors, this customizable Brushed Metal Wireless Power Bank features a high density design that students will love! It's a fun and functional favor or Prom, Homecoming, Winter Formal, or a Senior Party. Personalize the power bank by adding your choice of laser engraved imprint to the front side as shown. The power bank measures 4 3/4" high x 2 3/4" wide x 1/2" deep and includes micro USB power cord and rechargeable lithium battery. Because it's high density, this power bank is smaller and lighter than traditional power banks! NOTE: Phone charging cord not included. 4000 mAh capacity; 5.0 V 2. A output. UL certified.