The term “Oyster watch” typically refers to a watch that features Rolex’s innovative Oyster case design. The Rolex Oyster was the world’s first waterproof wristwatch, introduced in 1926. The key feature of the Oyster case is its screw-down crown and case back, which create a hermetically sealed, water-resistant environment, protecting the watch movement from water and dust.

A watch with the Oyster designation from Rolex often signifies a timepiece known for its durability, precision, and classic design. The Oyster case remains an iconic element in Rolex watches, representing a combination of elegance and engineering excellence.