The Oyster Perpetual Cosmograph Daytona in 40mm Oystersteel is a perfect blend of performance and timeless style. Its robust case, crafted from corrosion-resistant Oystersteel, features a monobloc middle case, a screw-down case back, and a Triplock winding crown for superior waterproofness up to 100 metres. The black monobloc Cerachrom bezel in ceramic, with a moulded tachymetric scale, enhances both durability and functionality, offering precise speed measurements. Protecting the dial is a scratch-resistant sapphire crystal, ensuring clarity and resilience in any environment.  

At its heart, the watch is powered by the Rolex Calibre 4131, a self-winding mechanical chronograph movement renowned for its precision of -2/ 2 seconds per day after casing. The paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers provide exceptional reliability and resistance to external disturbances. With a power reserve of approximately 72 hours, it delivers uninterrupted performance. The white dial, accentuated by black counter rings, ensures excellent legibility with a Chromalight display that emits a long-lasting blue luminescence. Completing the timepiece is the solid-link Oyster bracelet in Oystersteel, featuring a secure folding Oysterlock clasp and an Easylink extension for added comfort.