I don't wear a wristwatch for about 15 years now.
There are so many clocks and watches everywhere anyway. In school I had the habit (and ability) to read other people's watches.
Much later, when delivering mail on my bike, I still had no celly. But I knew every public clock (at crossroads, apothecaries, in shop windows etc) and every working phone box!
Nowadays, everybody's got cell phones that show the time. This is a little boring in a way ... And I always wonder why on earth would anyone still wear a wristwatch?