Christened by Rolex as the purest expression of their manufacturing spirit, the Oyster Perpetual combines two words that each represent one of Rolex’s greatest innovations. The Rolex Oyster introduced in 1926 was the world’s first waterproof wristwatch, and Perpetual refers to the 360-degree self-winding rotor that Rolex introduced into a wristwatch for the first time in 1931. If “simplicity is the ultimate sophistication”, the Oyster Perpetual would stand among the most sophisticated watches in the world.