@raccoon came in his review to the conclusion that:
The UI is fairly simple, though the mode spacing is not perfect.
I tend to agree: H-M-L mode and no memory is far from Andurils Box of Pandora but it is supposed to be a tactical light.
Imagine jumping on the bad guys and you accidentally turn on SOS or a bikers flash
But the mode spacing is not as bad as it reads from the manual (see values below).
| ASIN | low | med | high | turbo |
| brightness lumen acc. manual | 99 lm | 800 lm | 1600 lm | 2350 lm |
| brightness lumen acc. manual | 4% | 34% | 68% | 100% |
| brightness candela measured | 5% | 30% | 56% | !00% |
My first impression was that turbo was not too close to high. I observed a distinctive margin.
The lux-meter confirmed it. That is when you assume a doubling of lumens is a doubling of candela.