The only one? I can't say, but you are in the minority. Roberto got several direct answers to his question, some by professional watchmakers. Synopsis: It is not a good idea to put a watch head with movement and dial into any ultrasonic machine. Reasons given, solution intrusion, lubricant dispersal, others. That the OP would do that with inquiring first astonishes me. Sorry you don't like the answer. The humor was a way to make the replies light without trying to directly insult , sometime that works, sometimes it doesn't. At times it is a little crazy around here, was from the beginning, likely won't change.
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