I like fairly warm tints, so I would go with the 4000K, but everyone is different. 
The C01S’s 4000K high CRI looks great to my eyes too. I just wondered about the comparison of this light’s emitter versions, and for the purpose of a work light.
4000K ordered, with battery. Comes to 20.18 USD total from Sofirn’s store including 3.99 USD shipping and 10% off with code UBK82QA7 .
I take it there’s no regulated output, just like the SP40, since there’s no mention of it. Any LVP or is that handled by the wearer’s eyes?
Confusingly, the amazon.com posting linked earlier has an answer by the seller (Sofirn? 77 Outdoor Shop? more confusion) saying “it has moonlight mode.”
My comparison I made when the D25L was released
I know that, but thanks.
Sofirn cancelled my order one hour after I ordered, no comment on why they did that, but I wrote the Sofirn Account here.
AE would be my favourite to buy from.
Hjeh, I remember the dog in the first shots. :laughing:
And yeah, kinda meshes with my experience, that the SST40s give a brighter somewhat throwier beam, better for longer-range snooping (eg, outdoors, on a trail, etc.), and the 351s give a better-color somewhat floodier beam, better for intermediate range snooping (eg, in a room, attic, garage, backyard, etc.).
Excellent comparison video Funtastic, thank you. 
The D25L 4000K is now my go-to work light. Some thoughts and observations:
- Build quality: Decent, but inferior to Sofirn’s other lights like the SP40 or SP33. The end caps are very thin, and the threads are very shallow. At least it keeps the weight down. Nothing bad about the build, but holding the SP40 feels much sturdier and higher quality in the hand (and also heavier).
- Headband: Kinda sucks, but serviceable. The hard plastic holder is good for keeping the light’s angle, but can dig into the forehead. The headband’s adjustment easily loses it’s position and can get loose over time. On the flipside, it’s very easy to snug up while being worn. Again, the SP40’s headband feels better. In short, it’s usable and better than nothing.
- Beam profile: Great. It has a mostly circular spot and decent spill. At first I wondered about putting some diffusive film to get more consistent light without a hotspot, but for many (close-up) tasks the spot fills enough of the field of view to avoid being distracting while benefiting from higher light intensity at lower brightness settings. At high brightness levels, it may result in an undesirable tunnel vision but that’s another story. For now I won’t be putting diffusive film and will use it as-is.
- Color temperature, CRI: Great. 4000K is easier on the eyes than 5000K and I’m glad I went with it. The high CRI also makes work more comfortable by providing more “contrast”. This is by far the best part of this headlamp and makes it a great work light.
- Battery: Fine. I did not do any testing other than using it. At the second or third lowest brightness, the 3000 mAh 18650 Sofirn battery lasted a full day of work (8-10 hours, not timed). Charging takes a good while (3-4 hours? also did not time). It would be good to know about LVP and regulated output, but there is no mention of such features, so it seems safe to assume they are not present on this flashlight.
- Value: Great. It’s not perfect, but the robust headlamp format with the headline features of high CRI and 4000K availability make this very suitable for a work light or general headlamp at an attractive price. Great purchase.
That’s because it’s not made by Sofirn, but by Boruit, they just asked the factory to make their own changes.
No idea if it has LVP, but it’s an unregulated driver, can’t expect anything else at this price point.
That makes sense. Btw, great D25S vs D25L comparison video.
Thank you 
Nice review and I pretty much agree with your assessment. I didn’t realize Boruit was the maker. Makes sense now. Given it’s a headlamp and not something handheld with risk of dropping, smacking against something, etc., I can see getting away with the thinner metal. I went with the 5000K and I am happy with the tint. It’s very neutral.
My only gripe is the UI. It’s VERY annoying that you cannot start this light in moonlight/low, or “override” the mode memory. It’s very easy to accidentally trigger the strobe when trying to do the extra click for down ramp. And I don’t like the loop cycle of modes. But wow, turbo is ample bright and runtime before stepping down is very decent. I’m also pleased that recharging falls shy of full, so the battery is exercised in a healthy manner.
The other lesser gripe is the comfort. The headband cage that holds the light is hard plastic, instead of a flexible silicon or TPU. It’s not as comfortable as my Thrunite TH20. But the strap design is easy to set a good tension to alleviate that. Frankly considering that this is a USB-C Micro USB rechargeable headlamp with included 18650 cell, possible to get below $20 on discount… you really can’t go wrong!
Yes the UI isn’t great, nor is it terrible. The “switching direction” of the modes can be a bit confusing or end up in strobe/beacon modes, which are useless imo. But it’s serviceable, especially if set to a desired brightness and then just turned on/off. Changing brightness always trips me up.
Mhh… really? Mine is micro USB.
Yeah, it’s definitely micro usb
Sold my Olight HR1 and was looking at a Perun to replace it. Stumbled upon the Nitecore NU25 which seems ok in reviews for lightweight camping but I haven’t received mine yet.
Then this thread, and looks like I’m getting myself yet another Sofirn. This is listing at $15.99 with $3.99 shipping to the UK.
Many thanks all. Another slight wallet leakage inspired by BLF 
Man, I’m sorry. I got my lights mixed up. You’re right—it’s Micro USB. :person_facepalming: I need to take a vacation from flashlights…
Has anyone that has this light taken a look at the led PCB? Haven’t seen a photo yet so far.
I took apart a D25S with the SST40 LED — It’s a one piece aluminum PCB with the wires on one end —- to upgrade LEDs I had to remove the driver and lengthen the wires —I would imagine the D25L is the same board except for XP type emitters
Yeah I have the D25S as well so I was curious how the L looked like. What did you upgrade to? Did you daisy chain 2 PCBs together?
I did daisy chain 2 16mm boards — I used a samsung 5k and a Nichia 5k —— I want to do a version with 4k emitters eventually but I have these two ready to go — it was fun lining up the 2 LEDs square with each other
Greetings people! I got this headlamp recently and thought about doing a short runtime using Zak's app and my phone (mi 10). The battery had around 4.1V in the beggining of the runtime. The flashlight had a temperature of around 55-59°C (is it temperature reglated or does it use a timer to step down?). (P.S. My ~first post!)
