Simon, when will the S21C be available?
Since the thermal resistance of the seoul UV LED is too large, I cannot supply more current to it.
Later I will replace them with SST-10-UV, I will use a custom constant current driver (output 3A) to replace it.
Sad news, the manufacturer says only white light is available.
I love the S16/S21D body design, it looks and feels very high quality. They also have real cooling fins, which is great for a small body.
Please add a variant with a battery included
The driver has not been fully repaired, and there are still some problems. I had to produce dedicated drivers for S21C and S21D,
S21C has one less lamp bead than S21D, and there is no difference in other aspects. I consider installing ordinary color rendering index and high brightness LEDs for S21C, such as CREE XPL HD.
We cleared out Simon’s supply of S21D in just under 23 hours. 
S21D sell out already? There wasn’t even a “without battery” option this go around…
Nice to see demand picked up for the S21D at least
Yes, they sold out, and there was a without battery option. I ordered 2 without battery.
The demand for them must have gotten up.
When I asked if he planned to get different ano colors for it he replied it doesn’t sell good enough to justify that.
Or perhaps he made like 15 of them haha
And I thought I had time to overthink this purchase…
I think the S21D is the most underrated light on the market. Almost no one hypes it. Only a handful of reviews for it (all positive). Once more of them are in people’s hands and folks are posting about them and reviewing them sales will take off.
Granted, I’m biased. I think they are awesome. Simon is sending me a sample of the new 12A driver to install in one, so I’m pretty excited. I’ll have a 8A 519a 5700k and 12A 519a 5700k to compare head to head, along with my current 219b & 519a 4500k models.
[quote=LucasRunner]
This is so relatable. I think about some purchases for weeks and the result is that opportunity sometimes passes me by. On the bright side, at least I’m saving money on some frivolous purchases. 
[quote=CollectEverything]
I have the ability to think so long, some lights i wanted actually got discontinued by their manufacturers before i could get any lol.
Hi Simon, when do you expect the T4 in white to be available? Can I buy it now without the gift box? Thanks.
ok ,only 20 pieces T4 MAO without gift box in stock ,i will add a link tomorrow
Guys, what are the Convoy drivers necessary to push the 519a and sft40 emitters? i need some stuff to put in the S2+ hosts i’ve purchased recently…