ROCKBROS Magnetic Smart Tail Light with Brake Sensing IPX6 Waterproof

I thought this magnetic lite would be good to use on my seat bag. It took awhile to figure out how to get it mounted partly because the instructions were lacking on to mount it. After I got it mounted I went for a ride. The light is not very bright in the daylight. One section of my ride was a little bumpy which caused the light to come off of the mount. I did not discover it was missing until an hour later when I got home. Went back to try and find and I could not find it. So, unless you fly on perfectly smooth roads I would avoid this light.