Very good lamp, the sigma

I was looking for a powerful LED lighting for night riding and as mist.
This lamp perfectly fulfills this why I bought it.
The switch is easily accessible by wheelchair to turn the light without stopping which is handy when starting to train on Sunday morning in the fog and that it rises later in the morning.
Good battery life also. Rechage micro-usb socket handy.
For small against bémole still on the lamp mode of attachment to the support which is made by turning.
I wonder if it will resist in time to repeated vibrations of the road.
I also have some questions about the sealing of the micro-USB plug from the battery charging. For now I have not riding in the rain. We'll see but I trusted sigma so hopefully it will go.
Recommended!