Oyster case

The Oyster case is a type of watch casing designed by Rolex to be highly water-resistant and durable. It features a tightly sealed structure with a screw-down crown and case back, preventing water, dust, and pressure from entering the watch. This innovative design ensures the watch can withstand extreme conditions, making it suitable for diving and other demanding environments. The Oyster case revolutionized watchmaking by providing reliable protection and durability, establishing Rolex’s reputation for producing robust, high-performance timepieces.