I needed a headlamp for underground and for cycling in the autumn. Having stayed so some have to headlamps through the course of my life, I used to have in the HL55 finally found the feeling, what I was looking. The amount of light is more than sufficient, not distributed the photograph so bright but rather natural and very homogeneous. Especially in old mines and bunkers I find myself that I'm doing more and more long-term exposed photos only with the headlamp. Simply donates the most natural light and the pictures look so beautiful from easy. Furthermore, holds a 18650 battery in the light output, the I turn in about 10 hours and thus eliminates the battery replacement during a commission completely. All in all, just a point of criticism. Had there been the lamp 10 years ago, I would have saved a lot of money ...