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It's a First Omega in Space, mine is from late 2020 (courtesy of @ejay2.0), they're discontinued now I believe. It's a tribute/remake (?) to the watch Walter Schirra wore to space in 1962. There are a few differences, it's not a perfect remake, the most obvious thing being that it has a sapphire crystal. But I really like the case design without the asymmetrical crown guards that the later professional models (ie moonwatches) have.
Edit: I like the moonwatch as well, but I liked this more than the modern moonwatches.
Space watch.