very lightweight, you don't feel it on your head. it has several functions and very good battery life. it is also waterproof. all of this tested in the mountains for 48 hours

Very good flashlight.
It is not suitable for mountain running at all... even though it is advertised for that.
1) After an hour, it starts to hurt your forehead (it doesn't have any padding in that area)
2) When the flashlight is tilted downwards, the lighting shakes due to its weight. I also believe that over time, the adjustment of the tilt made with plastic teeth will easily break.

Unacceptable for the price and the company's name. In the specifications, it claimed to provide 6 hours at 400 lumens in spotlight mode. The first battery lasted only 2 hours, with brightness comparable to the low setting. The second battery lasted 4 hours. In an email to the company's support, the response I received was that the measurements were done in a laboratory. I simply timed it at home right after purchasing it, without any damage, rain, or anything else. With fully charged batteries. I regret switching from another well-known brand. I wasted 75 euros.