Car mfg's make cars that can go 200 MPH because you can drive them that fast, "legally" you can only go 55.
You can not physically dive to 300 meters. Yes commercial divers can dive deeper but you are correct, they do not need a watch on, nor would they have one on.
Braile on a drive thru ATM I would assume it is because of production. They make all the machines for all places the same, cost savings.
So.....we go back to the original question. There is absolutely no reason to make a watch or advertize one that is water resistant to 300 meters.
Thanks for the replies though folks. Enjoyed reading them.
P.S. Why do they call apartments, "apart"ments? They are not apart, they are all stuck together! LOL