Anything marked as a diver's watch (which you can find for as cheap as $300) is subject to similar tests for water pressure[1]. Rolex evidently does so for non

Anything marked as a diver's watch (which you can find for as cheap as $300) is subject to similar tests for water pressure[1]. Rolex evidently does so for non dive watches as well. [1]: https://www.hodinkee.com/articles/tale-of-two-isos-what-water-resistance-ratings-really-mean https://www.hodinkee.com/articles/tale-of-two-isos-what-wate...