It Wasn’t until finally the early 1900s that Guys began to ditch their pocket watches for wristwatches. (There’s lots of discussion all-around who created the main official wristwatch for men, but for this story, let’s go along with Louis Cartier, who developed the Cartier Santos-Dumont in 1904 for his pilot https://www.watchesworld.com/11-of-the-best-womens-watches/