Doesn’t work with stem bolts. Too tricky controls.
I installed this and found the stem bolts couldn’t be tightened properly. Handlebars just roll forward which could have caused an accident.
Also, very tricky to get the light to flash which is my preferred setting. Constant lights don’t differentiate cyclists in traffic.
Buttons are tiny. Useless if wearing gloves.
Doesn’t click when mounting. Not sure if it is securely locked in place, but not got the chance to try it on the road.
Feels designed by techies and not cyclists.
Shame as the quality/price seems ok.