Rolex Innovations
« SAPPHYTIMES SAPPHYTIMES 560 4/16/2024»Among the company's innovations are:
The first waterproof wristwatch "Oyster", 1926[citation needed]
The first wristwatch with an automatically changing date on the dial (Rolex Datejust ref.4467, 1945)[8]
The first wristwatch case waterproof to 100 m (330 ft) (Rolex Oyster Perpetual Submariner ref.6204, 1953)[15]
The first wristwatch to show two time zones at once (Rolex GMT Master ref.6542, 1954)
The first wristwatch with an automatically changing day and date on the dial (Rolex Day-Date, 1956)
The first watchmaker to earn chronometer certification for a wristwatch (1910) [7]