Support issue

The sound is varied and very strong. Smooth street to attract the attention of some motorists who ignore, alas !, the existence of cyclists.
But the holders of the main body that I attached to the handlebar with rubber bands as well as that of the pushbutton are, in my opinion, reconsider. One of the main body is too fragile. And that the pushbutton is unsuitable (it needs a rubber wedge to lock it).