In 1926, Rolex created the first water proof and dustproof watch.The watch was given the name “Oyster”. In 1931, Rolex invented and patented the world's first self-winding mechanism with a Perpetual rotor. This system, is still used today and it is at the heart of every modern automatic watch. Among the many technical innovations by the brand it was also the first wristwatch on Mount Everest. Today the Rolex Daytona, GMT, Explorer, Datejust, Submariner, and Presidential continue to be some of the most popular watches in the marketplace.