Interesting as well. Fully potted is good. I like that these lights are set to single mode when you tighten the head, but…… that is one more thing that has to be remembered to keep set on the right mode. I would probably never take it out of single mode but the fact is that any light with multiple modes available will fail to do what you need at some wrong time. I was hoping for a true single mode? The options on the Armyteks and the Jetbeam is an option though.