Arcmania actually worked with Liteflux to obtain the electronics. AFAIK he housed them in a unique body that he had made, and as worldedit said, it has a tough type III finish. It also uses a special reflector sized to work with the Rebel 100, which is driven by the Liteflux circuit. The circuit (probably an inductor component - but this is a guess) was tweaked according to each LED's particular Vf. The result is the brightest AAA light with a longer runtime at a given brightness setting than any of the Liteflux lights, again AFAIK anyway. It is another in a long line of high performance, small lights from Arcmania, and my favorite EDC.