Light is great but mount did not hold up!!
The Light and controller are 5 stars, but the under seat mount and seat post mount both failed. I cut off what was left of the mount and bonded the light to a piece of aluminum angle that I mounted to the bike. The light is so cool I will buy another one for my wife's bike and hope the mount is better on the next one. When the mount broke the light fell to the concrete floor and the light still worked.