These are Calatrava watches. https://www.patek.com/en/collection/calatrava Calatrava is a line of Patek watches, the above watch is a omega sub seconds. Nice watch but not a Calatrava And no it’s not too old for a 30 year old.
Based on the size of that cal 381 movement, that watch looks to be only 30-31mm, which would be hard for a man to wear. Of course, for all I know, the OP may be a woman.
No probs. It doesn't matter how old you are, just wear what you like, and if anybody doesn't like it...................just smile at them.
Well I don't have it today. But this is it... I originally was not sold on it but it definitely grew on me.