Some professions are definitely judged on what they wear, drive, etc., and for good reason.
Looking successful implies being successful, and if you need professional assistance you want to hire someone who is successful, not someone struggling. Many lawyers, real estate agents, financial consultants know this, so have designer suits, expensive watches, luxury cars, mahogany offices, to imply that they are successful at what they do, and thus imply you would benefit by hiring them.
My wife's surgeon drives a Bentley, parked outside his office. He is also exceptionally good at what he does.
I know a plastic surgeon who has a $10 million hilltop estate and used to throw giant parties in it deliberately to flaunt it. He is one of the most sought (and best) plastic surgeons in California.
These are symbols of success.
Realistically, no Apple watch cuts it. Not even close. In fact, an Apple watch would be seen as a sign of a lack of success.