It Wasn’t until eventually the early 1900s that Guys started to ditch their pocket watches for wristwatches. (There’s loads of discussion close to who produced the very first Formal wristwatch for guys, but for this story, Permit’s select Louis Cartier, who made the Cartier Santos-Dumont in 1904 for his pilot https://www.watchesworld.com/11-of-the-best-womens-watches/