@ luminarium iaculator
When you showed the photos above, in particular the one of the driver, I suspected one thing, and now that mine arrived, I confirmed it!
This light has 3 group modes, similarly to the new OTR 311:
A – Ultra Low > Low > Medium > High + Strobe
B – High > Medium > Low + Strobe [default group mode]
C – High + Strobe
You can check how to alternate between those 3 groups on my OTR 311 review .
I will do a complete review of this light in the next days!