World Timer

A world timer watch is something like a GMT watch on steroids. It has 24 markers on it, allowing its wearer to take a quick glance and immediately know the time in all 24 time zones, typically by placing the name of a large city at each marker. Often, these watches have beautifully decorated maps at the center of the dial, making sure everyone in the room knows that the wearer is indeed an important, globetrotting businessperson. Swiss watchmaker Louis Cottier is credited with creating the first mechanism to display all 24 time zones on a dial, while Patek Phillipe is credited with creating the first world time wristwatch (before Rolex created the GMT in the 1950s).