Mike S. February 7, 2023 My Wife and I are creating our initial overseas vacation soon after in excess of 28 yrs of marriage and so are headed to Switzerland in March. I have a number of Seiko automatics, a Magrette diver, a Seiko Turtle Exclusive edition, a Seiko SPB169, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/