Such as in a hybrid or electric car at low speeds.can it be integrated into the watch?
You could fit a bell to your handle bars
if you haven't seen the Timber! bell, check it out ==> https://www.mtbbell.com/ it is passive in that it rings the whole time you're riding. It can be a little annoying at first but after a week or so, I kind forget that I even have it on.
https://deltacycle.com/airzound-horn
