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A dress watch can be worn any time. It can always be dressed down.
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The Longines can be worn any time.
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I'd wear the Rolex with anything less than formal.
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You mean chronograph, not chronometer. I'd wear these with anything less than formal.
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The FXD is super casual. The others you could probably swing for business casual.
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Anything missing is up to you and your own collecting goals.
Watches
A community for watch & horology discussion.
White Tie/Black Tie: technically not supposed to wear a watch, period, but a dress watch like a JLC or Tank is OK (unless you have a Seamaster 300M...with a garrote in the crown...)
Business Formal: Dress Watch, really anything on leather
Business Casual: Bracelets are good to go, so divers, explorer, chronographs, plus anything above
Smart Casual: Sport Watches are actually preferred
Relaxed Casual: whatever you want
In a wold of people wearing Apple watches in every occasion only the extreme minority will notice what kind of watch you wear and for rarity of it nowadays appreciate that you're a watch person instead of apple notifications addict :)
So I'd relax and wear what watch I feel like in that moment.