Great as it makes cycling in Dunkelnplötzlich fun! It's incredible how nice and bright the road is illuminated. However, one must now be careful when adjusting - one wants to dazzle anybody! And even though said light just a few feet in front of me the road illuminating, I have been insulted twice for allegedly blinding of oncoming cyclists. I then set my times Sohnemann on my bike and let him ride on me. Although it appears not, but - for bicycles - unusually bright. What is noticeable is that the twilight switch turns the light even when it dawns only slightly. This means that even during the day in bad weather moves with light, but this is a safety benefit. Small suggestion: It would be nice if at the cable already plug contacts for the hub dynamo would turn and then you could Shorten it if necessary to the lamp.