Simon, what’s the diameter and thickness of the glass on the S12?
30.8mm diameter，2.5mm thickness
Fantastic, thanks! Going to turn it into a UV cannon at some stage 
Simon, could you please tell if there are any plans for it? I mean turbo access by two clicks (from “turned off” state as well).
I want S21A with sst40 and this feature, if possible.
As far as I understand, 2 clicks from off state is only possible with e-switch. But from on, instead of strobe it is possible. More low modes in EDC light is always nice 
I like the design of the S12, but I still feel a little burned by the battery size issues of the S21a.
The M4U - Yeah - a nice tube style 26650 light.
What driver is in it?
Can it be flashed to something more interesting? (Anduril - I fear I’m becoming a UI snob)
I’m OK with even “click+halfclick” sequence, it should be possible with any switch.
However for stress situations, second full click might be better.
I see the H1 is (back?) on the Ali store. Different knurling. I’m guessing with the updated UI that’s been talked about?
And does it has now the updated headband?
I can see in the page description that it's running Biscotti.
Also in one of the pictures you can notice the cut-out in the driver and a mechanical switch going flush with the cut-out.
The bigger issue - I forgot that this has onboard USB charging. The spacing relative to the first cooling fin makes me think it’s built into the driver. Between the two, I doubt any other driver would fit or work. :-/
Headband looks the same in the pics. Will wait for someone to grab it and check UI etc.
Still meh about XML2.
The M21B host link should be up soon as well. All it took was four sentences on my part and I didn’t even tell him I’m a member here.
Amazing customer service. Hopefully these sell well enough to make this worth his effort.
My concern is the cost of the host - the host + driver is already more expensive than the full light, so I guess that’s the point? Maybe I’ve got the sales pitch around the wrong way.
M4U is changed from BD06,it’s 7135*8 with biscotti.
Well, what do we have here…
Hope you all dont mind with thailand language… anyway great review and S12 definitely look very sexy…already have order it…with sst20 2700k.
Have a nice weekend…
Nice find. Nichia 219C 4000K seems to have a nice rosy tint in that video.
Can depend on the camera, they have big problems showing the right tint. In real life it can be green.