That’s a great test Eddie, thank you for sharing
There have been quite a few dissenting posts about swimming with a Speedmaster.
I brought up The topic on the Omega.net forums when I bought my 321 and Archer (who is a very well known and respect Omega watch maker) said that the Speedmaster is perfectly fine for swimming. He also indicated that Omegas own depth chart is accurate in illustrating what watches can be used for.
I guess it’s all about your own comfort level, but I’ve never had an issue taking mine in the pool for dip