The Galaxy Power Bank is flat with curved edges, giving it a very sleek and stylish look. The flashlight on the top is an added bonus! The large flat surface has an aluminum finish making it great for silkscreen, laser engraving or full color imprint logos. With a large imprint area, this item is great item for full color on two sides (one side included in price). There is an indicator light to show when it is charging. Simply press the power button after plugging in the power bank to charge. UL Certified battery.