It Wasn’t until eventually the early 1900s that Guys started to ditch their pocket watches for wristwatches. (There’s a great deal of debate around who made the 1st Formal wristwatch for guys, but for this story, let’s choose Louis Cartier, who intended the Cartier Santos-Dumont in 1904 for his pilot https://www.watchesworld.com/11-of-the-best-womens-watches/