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That's good info to know! Thanks!
It's interesting to see that a COSC grade mechanical movement is only a few seconds less accurate than a standard quartz.
I had a pair of COSC Rolex Oysterquartz watches (one to wear and one for the collection). That 21 year old Caliber 5035, 11-Jewel movement was within 7 seconds for an entire year (the watch was from 1983 -- timed in 2004). :BE