Where did Patek Philippe invent the first wristwatch?

Patek Philippe invented the first wristwatch in Switzerland, specifically in the city of Geneva, during the late 19th century. The company, founded in 1839, created this innovative timepiece for Countess Koscowicz of Hungary in 1868. This marked a significant development in horology, transitioning from pocket watches to wristwatches, which have since become a staple in watchmaking.