This thing is stupid bright. It uses the same Cree Q5 LED as the cheap light in this thread...http://forums.offtopic.com/showthread.php?t=4070826...though it is more expensive. I bet it's better-built, though -- type-3 milspec hard anodizing, orange-peel reflector (for smoother beam), and all that shit. It's also smaller than that other light; for anyone familiar with the Arc AAA, it's the same length, only wider. 180 lumens max. click me => At $50, I'd be seriously tempted to buy a couple more, but I know LEDs will be twice as bright in a year.