Omega SeaMaster 300M First Omega.

Diverdown

Congratulations on your new watch!! Did you go with the black or the blue?? How are you liking it so far?? How's it feel? How's look? C'mon, details 😀 Let's see some pics!
Not sure about the proper tightness of the crown, but I keep mine pretty tight on my dive watches. I don't take a wrench to it or anything, but I certainly don't want any water getting in either.

Freddie Mercury

I'm very happy with it.