Oh, yeah, I forgot to mention it looks like the Thorfire I bought might have been assembled from broken ones. The metal backplate is stained with some kind of crust, the lenses are slightly scratched and lots of little particles on the inner side of the lens.

There's an "On" button on the back of the light, and three tiny lights that I assume indicate the three intensities available by clicking the "on" button repeatedly. But the three lights don't match the three intensities. All of them come on immediately, stay on for two of the intensities, then one light drops out at the highest intensity. Doesn't make sense.