One of the tabs on the plastic bayonet closure to the opening of the lamp was broken off at delivery and worked in the housing. As a return on the effort is not worthwhile at the low purchase price for me, I have glued the nose with superglue. Let's see how long the holding. Furthermore, I found the light output entschäuschend low. The water resistance I do not want to test only due to the broken nose.
Update:
After 3 trips is also the holder canceled the screw. The glued nose still holds, but without bracket I can no longer attach to the bicycle, the lamp. :-(
