Oystersteel
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.


D-Blue Dial
Commemorating James Cameron’s historic solo dive. From brilliant blue to bottomless black, its two-colour gradient dial celebrates one man’s journey to the deepest place on earth: the bottom of the Mariana Trench.
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 clasp, which prevents accidental opening, and an ingenious Glidelock, allowing fine adjustments of the bracelet without using any tools - and allowing it to be worn and comfortably over a diving suit.


3235 Movement
The calibre 3235 is a new-generation movement entirely developed and manufactured by Rolex. This self-winding mechanical movement is at the forefront of the art of watchmaking. A consummate demonstration of Rolex technology, with 14 patents, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability. It incorporates the new Chronergy escapement patented by Rolex, which combines high energy efficiency with great dependability. Made of nickel-phosphorus, it is also insensitive to magnetic interference.

The Helium Escape Valve
Before they return to the open air, professional divers heading for the surface after a deep saturation dive must spend time in a decompression chamber, where they breathe a gas mixture containing helium. The tiny molecules of helium, an extremely light and non-volatile gas, infiltrate everywhere in the chamber, also penetrating the watch. During decompression, the helium is unable to escape from the waterproof case quickly enough, creating a pressure differential that could force the crystal out of the watch case. Rolex engineers created a gas escape valve fitted with a spring: it opens when the difference in pressure between the inside and outside of the watch reaches 3 to 5 bars, allowing the helium to escape, thereby protecting the watch.
Specifications
- Model case
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Model caseOyster, 44 mm, Oystersteel
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Oyster architectureMonobloc middle case, screw-down case back and winding crown. Rolex Ringlock System case architecture with Helium escape valve
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Diameter44 mm
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MaterialOystersteel
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BezelUnidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in ceramic, numerals and graduations coated in platinum
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Winding crownScrew-down, Triplock triple waterproofness system
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CrystalDomed, 5.5 mm-thick scratch-resistant sapphire
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Water-resistanceWaterproof to 3,900 metres / 12,800 feet, helium escape valve
- Movement
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MovementPerpetual, mechanical, self-winding
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Calibre3235, Manufacture Rolex
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Precision-2/+2 sec/day, after casing
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FunctionsCentre hour, minute and seconds hands Instantaneous date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting
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OscillatorParamagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
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WindingBidirectional self-winding via Perpetual rotor
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Power reserveApproximately 70 hours
- Bracelet
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BraceletOyster, flat three-piece links
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Bracelet materialOystersteel
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ClaspFolding Oysterlock safety clasp with Rolex Glidelock extension system. Fliplock extension link
- Dial
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DialD-blue
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DetailsHighly legible Chromalight display with long-lasting blue luminescence
- Certification
- Superlative Chronometer (COSC + Rolex certification after casing)