Brand DLG
If only you could see in the dark with it.
Thanks for chiming in Petr J., it is praiseworthy for Sofirn to preserve the original OEM wrap under their own; helps us consumers identify the product besides adding extra insulation.
That DLG “INR18650-B32” cell looks to use similar chemistry to that of the Sanyo GA/BL cells, with a little less capacity though. Good standard drain cell I'd say. 
Does it use an inductive buck driver or a linear driver?
DLG 3200mAh cell is popular in China because it is cheap and decent.
I would like to see TIR version with neutral white color
will a update of USB port and TIR?
Just received the light in 4000k
I like the light and tint, but I can’t understand why there’s no long click from off for moonlight. This light with an added moonlight mode only accessible from off would be perfect
i would appreciate a quick and dirty beamshot comparison of the 4.000k tint with the standard 5.300k version!
here you go 
an optional 5.000k hi cri version with samsung lh351d would be great!
Thank you, Mr. Beam!
It’s still tough to choose. Both are nice in their own way. Which do you prefer?
choice of luminous color is purely a matter of taste 
out of only this two personally i would prefer definitely the 5.300k one. the 4.000k version has a strong visable orange yellow tint which bothers me in fact.
some people may love particularly that. well i don’t… i like it way more neutral.
and at the best with high color rendering skills:
but that’s just me 
That’s very helpful. Thanks.
I prefer it more neutral too, and that Emisar D4’s color looks nicest to my eyes. eg. by comparing the colors of the yellow bird between the images.
So that makes my choice easier: SP40 5300K. The SP40 4000K’s orange tint reminds me of incandescent flashlights, which might be nice for relaxing but less so when trying to see or work on something. They might both have their uses. I wonder what the SP40 3000K looks like. 
Is there any news on whether/when an updated SP40 will be available, hopefully with a moonlight mode?
I asked recently and sadly they said no. Hopefully they’ll change their mind.
I got mine on discount a while back and I think it was the the coolest tint in the lineup. I’d prefer a warmer, more neutral option, but the price was right.
I wish I had seen the Astrolux HL01 earlier! Astrolux HL01 1200Lumen magnetic angle/headlight groupbuy - #3 by M4D_M4X
- Moonlight (Anduril)
- CRI95 with the SST-20 4000K
- USB-C charging port hidden under threads
It addresses virtually every suggestion for improving the SP40, even if it does look a bit silly like a meat tenderizer.
Has anyone measured an SP40 in their “lumens measuring device”? I’ve just measured mine in my DIY sphere and the numbers seem really low (while many of my other “calibration check lights” check good with my past values). I don’t expect my lumen values to be exact, but these seem really low. Mine is the 4000k XP-L.
I’ve measured:
Low = 6.6 Lumens
Med = 62.8 Lumens
High = 306 Lumens
Turbo = 798 Lumens
I’ve also measured my SD05 on a brand new Molicel P42A 21700 @
Low = 277 Lumens
Med = 792 Lumens
High = 2,223 Lumens
I’ve not looked up anyone’s verification of lumens measurements, but I seem to remember high should be around 900 to 1,000 lumens.
-Garry
I replaced the XPL 4000K in my SP40 with a dedomed LH351D as it was too yellow/green also for my taste.
I noticed that Sofirn is using some kind of non-standard 17 or 18mm PCB and the shelf underneath the led is black anodized which should be bad for heat transfer.
That could be debatable of how much loss there is from anodizing, but the flatness/bonding to the MCPCB and presence of a decent thermal compound applied properly are probably more important. If it's accessible, I'd probably sand it down, but mostly for flatness concerns.
If you do sand, it's interesting because you can find out the true quality of the anodizing - how deep it goes. MaxToch's, for example, are about the deepest I've seen.