First of all, I don't understand why you're getting down voted. Just because you have different opinion or you don't understand something?

And coming back your question: watch for man is a kind of jewellery, symbol of prestige, how wealthy you (your wallet) are. In some circles, people show it by having golden chains on the necks. In other by having "small", discreet details like cufflinks, sigils (if your family has aristocratic roots) and... watches.