I have delighted this lamp for a few weeks on my bike, and I am. Not so much that, other lamps of the mode, which automatically turns on the light at night or during the waning light. But what really impressed me is the light output .... 40Lux! Each of us knows the small Funzeln, which are mounted on the bikes, and which are more suitable to be seen as the one himself sees what. Not at this lamp: When I was the first time on the road in the dark with this lamp, I thought at first that behind me a car had turned on the high beams! Were about 50 meters away, thanks to this lamp, the traffic signs lit, and I could see the road, and the potholes that otherwise, contrary to throw a spectacular block just at night, our brave Stahlroß ... no longer, because I can drive around this small vile beasts, as I see them. ;-)
My conclusion: The lamp is more expensive than regular bulbs, but worth it. So 5 stars from me and the Recommendation: Buy!