SUBDELTA pressure-tests every single watch before leaving the workshop to ensure security and reliability.

Water-resistance and recommended use:  

5 ATM/ 5 BAR / 50 m: This watch is waterproof and can be worn during swimming but without jumping from a diving board. However, not qualified to snorkel or dive. 

10 ATM /10 BAR /100 m: This watch is waterproof and good for most water sports like swimming, sailing and snorkeling in shallow water. Not suitable for jumping off cliffs and diving.

20 ATM /20 BAR / 200 m: This watch is waterproof or diving proof and qualified for all kind of water sports and diving.

Water-resistance is not a permanent  quality.
Water-resistance should be checked on a regular basis as due to aging of the gaskets, water-resistance will impair over time