Mike S. February 7, 2023 My Wife and I are earning our initial overseas excursion just after around 28 yrs of marriage and therefore are headed to Switzerland in March. I've a number of Seiko automatics, a Magrette diver, a Seiko Turtle special edition, a Seiko SPB169, and some others. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/