It Wasn’t right up until the early 1900s that Gentlemen began to ditch their pocket watches for wristwatches. (There’s a great deal of debate close to who produced the main Formal wristwatch for guys, but for this story, Permit’s go with Louis Cartier, who built the Cartier Santos-Dumont in 1904 https://www.watchesworld.com/11-of-the-best-womens-watches/