rolex daytona

That year, Rolex decided to introduce a self-winding Daytona. rolex Rolex used Zenith’s El Primero movement, which had been introduced in 1969. rolex oyster perpetual Rolex made major changes to the El Primero, including slowing its frequency from 36,000 to 28,800 vph This resulted in a longer power reserve and longer service intervals Rolex renamed the movement the 4030