This headlamp is the ideal instrument for precision work as well as for the mechanics for people who work in the building plumber, electrician, painting, etc .. Its lightness that have forgotten on his skull, the distribution of weight between the light source and the rechargeable batteries and perfect, the setting of the width and intensity of the beam is very ergonomic orientation at the bottom of the site up and a definite plus overlooked other headlamps that I have used. Its ease of use would almost forget its high price !!