Winter poses a variety of questions for the watch wearer — functional, sartorial and from time to time technical thoughts. Starting output simultaneously because the ref. 6200, the Submariner ref. 6536 returned to some thinner circumstance and lesser crown (and 100m drinking water resistance) but was given the Cal. 1030, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/