Lighting is really impressive compared to a halogen bulb, and more incandescent bulb ... One can drive perfectly in the dark, we can see the road. I do not put 5 stars for 2 reasons: - The price because it's still expensive, even I agree that quality has a price, and here it is not "made in china". - This lighthouse illuminates a perfectly rectangular area, but everything else is black, sharply. It therefore lacks some transition zone. So the bike is not as visible to motorists that it (much like an incandescent). So I bought for my other bike Cyo RT that is most visible (with a hub dynamo).