Meanwhile, there’s some proof that international distributors hated the inconsistent and infrequently illogical numbering programs of their Swiss overlords. 100M Waterproof: Using a drinking water resistance of nearly 100M you can easily take care of most cases in everyday life, like washing palms, rain, swimming(remember to tighten the crown when https://www.watchesworld.com/a-history-of-watch-reference-numbers/