Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, alloys most commonly used in high-technology and in the aerospace and chemical industries, where maximum resistance to corrosion is essential. Oystersteel is extremely resistant, offers an exceptional finish once polished and maintains its beauty even in the harshest environments.
The Yacht-Master II is equipped with a new dial, and new hands that are characteristic of Rolex Professional models, enhancing legibility and sharpening its aesthetic appeal. The dial now features a triangular hour marker at 12 o’clock and a rectangular hour marker at 6 o’clock for more intuitive reading of the watch. A luminescent disc on the hour hand clearly distinguishes it from the minute hand. The Yacht-Master II’s countdown can be programmed for a duration of between 1 and 10 minutes. The programming is memorized by the mechanism so that at a reset it returns to the previous setting. Once launched, the countdown can be synchronized on the fly to match the official race countdown.
THE OYSTER BRACELET
The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology, designed to be both robust and comfortable. It is equipped with an Oysterlock folding clasp, which prevents accidental opening and the Easylink comfort extension link, also exclusive to Rolex. This ingenious system allows the wearer to increase the bracelet length by approximately 5 mm, providing additional comfort in any circumstance.
The Yacht-Master II is equipped with calibre 4161, a self-winding mechanical chronograph movement entirely developed and manufactured by Rolex. Its architecture, manufacturing quality and innovative features make it singularly precise and reliable. This abundance of Rolex technology, the result of over 35,000 hours of development, includes a patented function and comprises some 360 components. Some of them are made by UV-LiGA, a micromanufacturing technology entirely mastered in-house by Rolex. This technology allows the production of components whose tiny proportions or complex geometry rule out manufacturing by traditional machining methods.
Oyster, 44 mm, Oystersteel
Monobloc middle case, screw-down case back and winding crown
Bidirectional rotatable Ring Command bezel. Blue Cerachrom insert in ceramic, engraved numerals and inscription
Screw-down, Triplock triple waterproofness system
Waterproof to 100 metres / 330 feet
Perpetual, mechanical, self-winding, regatta chronograph
4161, Manufacture Rolex
-2/ 2 sec/day, after casing
Centre hour and minute hands, small seconds hand at 6 o’clock. Programmable countdown with mechanical memory and on-the-fly synchronization. Stop-seconds for precise time setting
Paramagnetic blue Parachrom hairspring
Bidirectional self-winding via Perpetual rotor
Approximately 72 hours
Oyster, flat three-piece links
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link