I'm one of those people who doesn't wear a watch, depending instead on my mobile phone for time. The good thing about doing that is if you set your phone's time to follow the operator's, you never have to adjust the time when traveling across different time zones.
Those who like their analog watches, though, can opt for one of these TX Airport Lounge timepieces. According to the product description, it displays the time and season for 24 locations at the push of a button.
Starting at $490, the TX Airport Lounge is reasonably priced for a watch. Sure, you can get a Casio digital that shows as many time zones for less than $100, but you lose style points for doing that. As for me, I'll stick with my mobile phone.