Patek Philippe

Founded by Antoni Patek, a Polish watchmaker, when he began manufacturing pocket watches in 1839. Patek began working with a French watchmaker, Adrien Philippe, who invented the keyless winding mechanism. Patek Philippe was established in 1851 and grew into one of the most well-known and respected watch brands.

Rolex

Rolex was the first company to introduce a watch with an automatically changing date on the dial, which was the Rolex Datejust in 1945. Rolex was also the first company to introduce an automatically changing day on the dial, a watch that's waterproof to 100 meters, and the first GMT watch. Rolex was the first watchmaker to receive chronometer certification for a wristwatch.