Congrat to the winners! 
Thank you, but I’m not interested. You can choose another winner.
3 Thanks
Got it! We will choose the new early bird tester again.
Please make a SFT40 5000K version and I will buy it.
1 Thank
+1 one for me. Looking forward to that headlamp, as I was looking for a wellbuilt headlamp with gesture control.
Interesting. Was this resolved (i.e. what are those 3 extra LEDs or sensors around the main emitter?). Khun @Weerapat_K has reviewed this headlamp lately, perhaps he knows?
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Also very interested in this one with very unique design…
Headlamps with rotary switch are very rare, but so pleasant
This could be headlamp # 121 
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I have no idea yet, but have an alternative hypothesis: these are 3 more RED LEDs which are more spot, and mix light with the the 3 more diffused light red LEDs? But that would go against the reported arithmetic of the LEDs involed in this headlight as stated (it says there are only 3 red LEDs, in addition to the 6 white LEDs for flood - the 3 in question are missing somehow). Could anyone with this light confirm or deny it?
There definitely is a motion control LED and receiver on the RHS of the light, but that doesn’t preclude having a paralel control system in front - but why 3 then?
It’s actually an interesting flashlight design. But I would also prefer SFT40 5000K. So that it doesn’t differ in temperature from flood mode.
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Mechanical rotating switch - moving part. Is it possible to operate it with one hand? This is not “Keep It Simple” design for sure.
Dang! I forgot reply that question earlier. The “diodes” won’t lighting, just used for TIR hold on right place.
These are just 3 locators used to ensure the right position.
I have a few things I’d nitpick here and there but overall I like it and will be getting one. It’s interesting.
Where can I buy an extra hard-plastic bracket for this light? Can’t find it on Sofirn site. I found a replacement bracket with a strap on Wurkkos site, but it’s a closed eyelet type rather than snap in and there are 4 choices - not sure which one would fit? Are there any other brackets that could fit this light and can be easily obtained?
I bought this Olight headband with a rubber strap they do a pretty good job Head band
Cheers for that! One idea for an extra bracket or two is to attach the brackets to a bike or a helmet permanently and just move the light around. Those original Sofirn clip on brackets would be ideal. I’m pretty sure they are not just Sofirn - I recall Wurkkos H25S had probably the same one (I imagine both tubes are the same diameter and the spread is the same to accomodate the lamp’s head in the middle, but where do I find just brackets?
On AE, of course
Just keep in mind there are reports that that cheap plastic tends to crack after a while. Especially after being held in cold environment.
1 Thank
I have finally been able to pick up the HS21 from the post office. Thank you Sofirn for the Giveaway!
Here are a few first impressions. Measurements and outdoor beamshots will follow. As I am currently at home with a cold, it may take a few days…
The overall quality is good. There are minimal abrasions on the edges, but since these are free review samples, I don’t see a problem there.
The switches are good. Both the buttons and the rotary switch feel good. The button has a crisp pressure point and clicks audibly. The rotary switch clicks into the individual positions with a good feel.
The IR gesture feature is not really that useful. Sometimes I get incorrect switchings (unintentional change of light levels) or the switching does not work. Sometimes visible light can trigger the IR sensors, which can potentially be problematic at times (for example, if someone is wearing a headlamp and occasionally shines it on the HS21).
There is a groove in the battery tube, but I cannot say why.
The USB charging port is on the side. The IR gesture sensors are also on the side. The plastic cover around the charging port was not mounted evenly:
The recesses for LEDs in the optics are covered by the texturing. Unfortunately, there is no front glass to protect the plastic optics.
The beam is good, both for the main and the close-range LEDs. At most, there are artifacts in the form of barely visible rings, although this is not noticeable on the whitewall. Thanks to the texturing (which is not shown in the Sofirn images in the opening post), the beam from the flood LEDs is absolutely uniform and wonderfully suitable for close-up use.
Throw LED (SFT-40)
Flood LEDs:
The tintshift of the flood LEDs is interesting - with increasing current they turn slightly green, at least seen with naked eye. On two lowest modes they are just perfectly neutral.
The UI is Muggle-compatible and can be used even without any instructions. I would have liked stepless ramping a little better, but the light modes are well tuned and usable. Unfortunately, there is mode memory regardless of the selected light mode. This means, for example, that High could be saved for the main LED, while the flood LEDs could have Moonlight saved. This can lead to unpleasant surprises, as you can temporarily blind yourself while changing light mode… A mode memory for all levels except possibly red would be better.
Speaking of red: There is no way to directly select the highest light level for red, as double-click activates a “flasher” for red, which simply flashes every 2 seconds.
Red flood LEDs, the beam is just fine.
At first glance, there are no Photo Red LEDs installed. In direct comparison to an XP-E Photo Red, the light of the HS21 appears slightly more orange-red.
The tint-shift for the SFT-40 is okay, and it is not annoying green.
Summarized: a good headlamp, with good features and easy UI. Seems to be a good choice for everyone who just needs a headlamp for closest range and even for some throw. I can imagine that the red light can be used to mark things or as a kind of “tail light”.
6 Thanks
I’m still waiting for mine to clear customs, but couldn’t that be a good thing? As in: you set each mode to the most useful level (e.g. Flood to low for cooking, Flood+Spot to medium for walking, Spot for Turbo for, well, spotting or some similar) and use the dial to get what you need quickly without fiddling with the button?
Plus the gesture switch could make fast adjustments for each mode when the level is not quite right when say biking?
I get the surprise part possibility but it, at least theoretically, looks like it may be pretty convenient fast switching idea between the dial and the IR sensor? Will see how that translate to practice probably next week - can’t wait 
p.s. It may be just me, but with the few lights I used, I always consider all the various permutations of levels and sources and situation that they could work for etc. before getting the light (and for a week or two afterwards) and then I just end up using one or two settings all the time in practice - and get annoyed with all the clicking and double clicking - each light following a different scheme. Using the dial instead to do all the adjustments, looks attractive. And the separate memories look like a way to program what it does in advance…
1 Thank
Could you explain? I thought that, from on, double-click is only usable for red for the blinking and doesn’t work for other modes, and I thought that all the modes, including red, have 4 levels i.e. Turbo is part of that and is not activated by double clicking as in other lights.