Purchase outside skroutz
After 3 years of use, a problem occurred with the switch or some internal contact and the flashlight suddenly started flashing until today, 01/05/2023, when it stopped turning on.
Sturdy construction but not so resistant to impacts, as this caused the beginning of the end.
I will buy it again because
a. it has a relatively small volume for an explosion-proof flashlight
b. it has good response (always as an explosion-proof flashlight) in fuel tanks / crude, as I had no problem with the lighting and duration using a nitecore battery.
c. waterproof without problems after 3 years.

Its issues are
a. not so resistant to impacts inside tanks
b. minimal difference between the 2nd and 3rd mode
c. I believe the 2nd mode should have 830 lumens and the 3rd mode 1200 lumens, so it would be exactly what is needed for an all-purpose flashlight.
d. it should be able to adjust the focus of the lens (wide to narrow) to provide convenience in dark areas.

Instructions for sailors: after purchase, it would be good to invest in something to protect it from accidental falls and unnecessary impacts

I will come back after extensive use. For now, it appears to be quite high-quality and powerful. It has 3 modes, but the 2nd and 3rd modes are almost the same.

Well, as I mentioned before, I am coming back after 6 months of daily use.
The pros:
Mode 3 is very powerful.
The battery I purchased from the same company seems to hold up well and work well with the flashlight.

The cons:
Mode 1 is useless. The only use I can imagine is if you are trapped after an earthquake and need a faint light. It illuminates as much as a candle.
Mode 2 is too powerful and is almost as powerful as mode 3 when the battery is slightly drained. So there is no proper gradient between the 3 modes. In one mode, you have nothing, in mode 2 you're okay, and in mode 3 you're good, but only when the battery is fully charged.
The weight is a bit annoying.
The strap broke quite early, so due to the above reasons, we go from 5 stars to 3.

And as I mentioned, I am coming back after extensive professional use of 4 years. The flashlight is as good as new. It doesn't understand anything. It has been dropped in buckets of water and/or other liquids (like oil, petroleum), it has been hit, it has fallen from a height of one meter multiple times, it has fallen from a ladder, step by step. It hasn't suffered any damage. I wouldn't buy it again for the reasons I mentioned above. It is mainly useful in mode 2. Mode 3 becomes the same as mode 2 as soon as the battery drains a bit, and mode 1 is non-existent. Personally, I was bothered by its bulkiness and weight.
So yes, it is very durable and has all the certifications for explosion-proof, but on the other hand, it has several negatives that would make me look for something else.