Easy to assemble. The light output of the front radiator calls with all my friends a smile on your face :) me to this day was not aware that there are NEN StVZO approved Dynamo Radscheinwerfer that produces as much light. I recommend the spotlight each of the, but rel., Can get over high price. can be seen better on the one hand and on the other hand also better perceived considerably. Check correct "attitude", because there might be "rough" reactions of oncoming motorists else ...;)