Large capacity power bank in a slim design , Aluminum Exterior, 4 LED power indicatory lights, On/Off button, Micro to regular USB cord included, UL certified Li-Polymer battery with a 1000-1200 cycle durability . Complies with Prop 65, UL, UN38.3. 4.5" L x 2.875" W x 0.625" H. Price includes a Laser Engraved Logo. Imprint area is 2.75" W x 1.5" H on Top (Laser). Call for multi-colour or multi-location imprints or for rush delivery availability.