Top chronometer certification: Swiss Chronometer Certification (COSC) + Rolex certification (after the movement has been installed in the case)
Silver-colored dials
Many of the OYSTER models feature a sunray effect on the dial, which reflects the lightness of the watch. This effect requires a sophisticated brushing technique that creates a pattern of engravings that extends from the center of the watch face outwards. The light is dispersed along the markings, creating a subtle yet distinctive effect that reveals itself in different shades as the wrist moves. Once the sunray effect has been completed, the watch is then colored by physical vapor deposition or electroplating, and finally finished with a varnish.
OYSTER STEEL
Rolex uses OYSTER STEEL to forge its steel cases. The OYSTER steel developed by the brand belongs to the group of 904L steels, an alloy widely used in high-tech, aeronautical and chemical applications, and therefore necessarily highly resistant to corrosion. OYSTER STEEL is extremely durable and shines brilliantly when polished, even in extreme environments.
OYSTER STRAPS
The Oyster bracelet is the embodiment of ingenious form, functionality, aesthetics and technical sophistication. Introduced at the end of the 1930s, this metal bracelet, consisting of three wide, flat links, is extremely robust and remains the most widely used in the Oyster collection, and the Oyster Perpetual watches are fitted with Oyster clasps.