First of all I must say that I have not, these lamps mounted on my bike. I think for use in a large bicycle is not sufficient luminosity. When a child's bicycle, it could be due to the lower amount sufficient (is only a guess). I have the lights installed in any case on my children Bike Trailer namely twice. White two front and two behind red, the luminance is more than sufficient for this application. However, I felt more concerned that the trailer is seen. The flashing can be seen in a very long distance, therefore the lamps have at least met my expectations. I already had the event that one of the white lights did not work anymore, how and why, to me is still not clear. At first I thought that the battery is dead, but the lamp was working again the next day ...
