It is dd on 2 AA lithium energizers. I'll take some pics for ya tonight. It is MUCH MUCH brighter than that little 5mm led.... AND you can use the filters that came with the Rebel. On my DMM I measure on fresh AA Lithiums a bit over 320mA. This will drop rather quickly, but will not be noticeable to your eye. I had that emitter in a brinkman legend, but the switch had intermittent problems and I got tired of the flickering. Even after I took the switch apart and cleaned it....it still flickered. I decided I'd try it in the rebel...and I am very pleased with it. I like it's clicky switch more. No more flickering.