Louis Cartier invented the first men’s wristwatch in 1904. An earlier version of a wristwatch had been created for women, but they were not used in mainstream society. Cartier’s wristwatch came about because of a pilot friend who needed an easy way to keep time while in flight, since you can’t keep your hands on the controls while you are fishing a watch out of your pocket! The wristwatch gained popularity after WWI when returned soldiers wore them out and about. The first digital wristwatch went on sale in late 1969, created by the Seiko company.