Here's the skinny on this sleek and slim portable Powerbank Dual Port, which allows you to charge 2 devices at the same time! Some other highlights are the power banks on/off switch and the percentage indicators to show the battery level. Huge imprint area for your logo or message decorated with 1 color or laser engraved artwork. This high-quality aluminum case 3.8" x 4.7"" x 2.6" bank is small and lightweight enough to fit into a purse or pocket - but the internal lithium-ion battery.