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The first waterproof wristwatch "Oyster", 1926
The first wristwatch with an automatically changing date on the dial (Rolex Datejust ref.4467, 1945)
The first wristwatch case waterproof to 100 m (330 ft) (Rolex Oyster Perpetual Submariner ref.6204, 1953)
The first wristwatch to show two time zones at once (Rolex GMT Master ref.6542,
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
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