I’ve used some OLight headlamps over the years, and while I generally have good things to say, there are some annoying features of the brand that I don’t understand.
My buddy Vince from the Netherlands explains a crucial difference between his two OLight headlamps – the H35W and the H37W models. The problem occurs because the H37W dims the light far too much when it gets warm. Vince tests these headlamp units in 6°C! Not exactly a warm environment. If he was here in Thailand in 35-40°C, there would be a serious issue. Would it even turn on at all? lol. I’m sure it would, but you can see that this H37W may not be the right headlamp for you.