Originally Posted by john bono

Meh. According to what I read, the emitter is running at 22W, and putting out something like 60 Lumens/watt. I think the Cree xre in the q5 bin is in the neighborhood of 100lm/watt. Sure, the light will be a smaller package than a multi-led cree light, but the cree will get the same output and runtime from a much smaller battery.