Mike S. February 7, 2023 My Wife and I are building our to start with abroad vacation immediately after around 28 yrs of marriage and are headed to Switzerland in March. I've numerous Seiko automatics, a Magrette diver, a Seiko Turtle Specific version, a Seiko SPB169, and a few others. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/