For me my 438 is one of my top watches though I have a small wrist. IMO some Planet Oceans look far thicker.
Thanks
tr573 it actually doesn’t look as thick as expected. Looks like a typical 15-16mm watch from your pics.
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Pulling out the crown to the first position, pushing the crown toward 12 will set the date, pushing the crown toward 6 will move the GMT hand.
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This is gen function movement . Gmt hand is not independent, the hour hand is. So set the time for the second time zone with crown full out , then set the local time hour with it halfway out. Date moves when you set the local time hour ahead forward 24hrs. It's made so you can adjust the local time quickly when traveling but date setting is a pain