That is partially correct - the wristwatch was invented earlier by Patek Philippe, but was used principally by women. Louis Cartier adapted the design with a leather strap and buckle for Alberto Santos-Dumont, a Brazilian balloonist and heavier-than-air flight pioneer. Santos-Dumont, so the story goes, wanted to keep both his hands on the controls while checking time. This association was responsible for the popularization of the wristwatch among men. That is also why there is a recurring theme of Santos in Cartier products.