When selecting this headlamp I initially thought that it is a bit exaggerated with 90 lumens and a range of 75 meters. My first test run in the rain in the dark forest showed, however, that it may not be less. The lamp is perfect. It lights the way out prior to a sufficient so that running (Running) is to make a pace of 4 min / km still good. At a pace of 6 min. / Km can be seen even extremely much. A weaker lamp would in my view night no good. 90 lumens you need if you want to run more or less ambitious in the winter when it is dark. At the top of the lamp is very well located. Even after just over an hour, she does not press. The folding mechanism is so far rather stable. Here I'm curious how long does that. This seems a bit underpowered in fact. For me, the lamp is top at this price! Strong buy recommendation!