It Wasn’t till the early 1900s that Adult men began to ditch their pocket watches for wristwatches. (There’s loads of discussion about who made the primary Formal wristwatch for men, but for this story, let’s go with Louis Cartier, who built the Cartier Santos-Dumont in 1904 for his pilot Mate, https://www.watchesworld.com/11-of-the-best-womens-watches/