tldr; Compact 18650/21700 EDC with SST20 emitters, or mule with 519a for high CRI. Popular with Anduril UI.
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Best praise vs top criticism for Emisar DW4
“TIL there is opensource flashlight firmware. The Emisar dw4 is now a contender. Thank you”
“I wondered this myself last year and ordered a Dw4 from Hank with red emitter- BIG mistake as I couldn't see much with the red. As a kid i dreamed about one day having a red light or even some red plastic to put over a torch. I have numerous torches with 519A which work great for hunting nightcrawlers- they really stand out with a warm, quality beam. You really do not need much light at all. I have the grandkids well trained now and I get to be the torch man. The family tradition lives on.......... Amazing how many folks have never done this and think it is very strange. Damn city folks.”
378 Reddit opinions analyzed • Last updated 4/5/2026