Mike S. February 7, 2023 My Wife and I are building our to start with abroad journey after over 28 decades of relationship and are headed to Switzerland in March. I have many Seiko automatics, a Magrette diver, a Seiko Turtle special edition, a Seiko SPB169, and some Many others. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/