Yes, both the potted and unpotted C01 have o-rings,
yes orings,
Its just incredible, there are Orings,
and on all kinds of Sofirn C01 there are O-Rings
This is very important,
because the fake news is not reporting it,
there IS an O-Ring around the 5mm LED :innocent:
we will be presenting the evidence later
Thanks Allā¦ So Iāll take it as a YES? LOL
Edit: All of page 106 is about orings confirmation and potting infoā¦
Hot damn, Glad I ordered Black and Green!
glad youre happy you ordered potted lights 
I avoid black flashlights,
I ordered Orange, with O Ringsā¦ lol
I dont think I need my lights to be potted, I like Orange with O Rings
(I hope nobody asks if they can order O ringsā¦ lol)
This UnPotted C01 seems plenty durable enough for me:
Now I hate that it was me.
It was not you who made a widespread rumour out of your remark, that was all the people who half-read it or even only read the replies.
I am hearing now on CPF some of the supplied head orings maybe thicker, or thinner, than what was, or is currently supplied lolā¦ I think itās pretty cool they offer spares thick or thinā¦
In case you missed it, my son (older and stronger in the meantime) did an even more brutal test on the 2020 version, although this time it was a potted one. Looked very beaten-up but remained fully functional after the test.
When I received mines (from Sofirn site), I tested an orange one (which doesnāt seem to be potted).
Threw it up to the air in my room for 2 or 3 times, let it fall on the floor andā¦still works 
It just got 2 small bruises in the head 
Love C01 but not the Red Led version.
Irregular beam with artefacts
Led is not centered,maybe miss Oring
Thanks for the video djozz!
Very convincing durable little puppies, and the aaa lights are too! (-;
No!
O ring should center it, Led a bit crooked and can see space
canāt diassemble now itās potted.
But classic C01 is wonderfull
Yes, it is.
People devised methods to get the 670nm C01 more floody with a more even spot. Maybe this is something for you.
I tried various grades of sanding on one, and the beam really improves but think I loose a lot of light. I should have measured the output before/after so I can not be sure, but compared to my second red C01 it has 30% less output
Thatās to be expected. Are you sure that it is really the total output and not just only throw? And lower output doesnāt sound bad for a red light that is intended to be used in low light conditions.
How many lumens does your C01 Red produce, in stock form? I would like to crosscheck my meter with yoursā¦
on my meter it only makes 1.2 lumens
I consider the C01 Red pretty useless, except as a spare battery carrier
imo sanding the LED dome will not make the light more useful, just dimmer
how about potting the whole āconeā where the led is with clear acrylic, kinda turns the whole thing into a big TIR lens and shouldn`t lose any light, if it remains the same (and it shouldn`t be) doing scotch tape over the front would now be possible.
Potting the front with clear acrylic will remove the lens function of the front curvature of the 5mm led, it will turn the light in a sort of mule, but with a weird reflector effect. Could be a nice beam by chance though.
I measured both red C01ās properly, and it is worse: the untreated one I measure 0.45 lumen, the one that I sanded the reflector and led of I measure 0.21 lumen. But it is not guaranteed that before the sanding operation both lights had the same output so it is kind of a bad experiment :person_facepalming:
About measurement cross-checks: this is about the worst way thinkable to check light measurement contraptions. First we do not have an idea how much variation there is between output of different red C01ās, could be a lot. Second, the region of the spectrum that I found luxmeters to have the highest errors is in far red, usually they read multiple times too high in far red (as also seems the case with your luxmeter), even if the performance over the middle part of the spectrum is very reasonable.
thanks!
you probably used a different conversion factor than for white light
in any case, very helpful
I find the C01 Red rather dim, and the beam is poor. Sanding the LED makes the output lower, and the beam is still not very goodā¦
I prefer the C01Rā¦ it has a lower minimum, plus two higher modes, and a very nice beam