Since its humble beginnings, Rolex has become synonymous with luxury and achievement in horology. In 1910, Rolex became the first wristwatch to receive the Swiss Certificate of Chronometric Precision. In 1926, the Oyster watch, an enduring part of the Rolex collection, became the world's first waterproof and dustproof watch. The first automatic winding watch is also a Rolex creation, debuting in 1931. Today, Rolex is the single largest luxury watch company, retailing in over 100 countries and producing an average of 2,000 watches per day.