Doesn’t get more straightforward than that. Weighs no more than a pack of gum but packs up to 20 hours of light on a single USB charge. Toggle between two brightness settings at a tap. Programmable brightness memory. One size.
NITTY GRITTY: 4-150 lumens, visible from 8-40m. Three settings: low, high, strobe. Includes USB cord. Adjustable. 56 g.