DC prior, I myself am a flashlight freak and looked at the lamp because of the extremely strong brightness gekauft.Gleich after it was delivered, I closed them to load the accus completely full which did not last long as it lasted summoned sind.Ansonsten it ca 4 hrs. when discharged sind.Probeleuchten tested and behold they shone at full power for 2.5 hours and was then slowly weaker but still shone enough for 4.5 hrs. in order still illuminate the whole court and are 20x15m Hoffläche.Liegt probably due to the very good and protected Battery packs with 4000 mAh.Die same lamp is also available in other versions with accus of lower mAh capacity clear that then turn out some bad reviews what a burn-time angeht.Den same test I also reiterated 4x and the burn time was prolonged by as much as a few Minuten.Bin thrilled what would be the lamp angeht.Eine small change of Accufaches the manufacturer not bad the cover is made of rubber and it would be better bothers firmly sealed plastic to verarbeiten.Mich itself but nicht.Und As for the price I have nothing to write about that have to achieve similar benefits one puts much more hin.Es is my 5th head lamp and by far the best I've ever hatte.Kaufempfehlung 100%. Because of the heat development of other assessments, it is clear but warm even after 2.5 hours, you can handle them well and in winter even of Vorteil.Fazit: what is stated in the Beschriebung the truth and can also be seen on youtube well.