Of the three major inventions of Rolex, the Oyster Perpetual is equipped with a completely waterproof Oyster case and a perpetual mechanism that automatically winds the mainspring. The Oyster Perpetual, which can be said to be the origin of the many variations of Rolex, has a case size that can be used by anyone, regardless of age or gender, and a wide range of dial colors, and is still popular today.
