I just got my first commercial LEP flashlight today. It is the Weltool W4 manufacturer rated at 1782Kcd. I tested it and got a result of 1643Kcd. That’s pretty close to spec. It is an amazing performer intensity wise. I’m not as enamored with how narrow the beam is though. And the beam is very very uneven color wise. It is bluish in the center and more yellow towards the edge. It’s yucky to look at. The color rendering is rather atrocious as well. My engineering goals are going to be improving LEP in all these areas. Wider beam, more consistent color, and better color. Oh yeah. And one more thing. More power.