I think they must mean seal change every 1-2 years which is correct, I only have 2 water resistant watches and I have them pressure tested every 18 months and seal changed every 2-3.
This is my sister in law's Daytona as a result of not paying the small amount necessary to change the seals and have a WPT done:
![[IMG]](proxy.php?image=http%3A%2F%2Fomegaforums.net%2Fdata%2Fattachments%2F78%2F78590-b41707722c4b2439688e5a8e0b8c9420.jpg&hash=45f28ebd32a1f198357a3ad2e9f309b1)
Click to expand...