Bad idea. The movement needs to be removed from the case before going into an ultrasonic. You could pull the bracelet off and wash that alone no problem of course, but don't put the complete head of the watch in there.question for the pro's:
my tissot is getting realy dirty. all black gunk in the links of the band, the tachymeter doesn't move anymore at all, ...
i have an ultrasonic cleaner...can i dump my watch in there?
or will the vibration wreck havoc on the mechanism, or because of the vibration, not be waterproof?