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I'm sure that most of you will be aware of the 9F calibres from Grand Seiko but this page is a good read if you haven't already seen it. http://www.grand-seiko.com/manufacture/9f-quartz.html

Their...

Both my GS quartz watches with 9F62 movements hit them bang on. My tunas always did too. My g-shock does as well.

It does annoy me a bit when they miss tbh and I've had a few that have.

Of...