Rolex Deepsea

sea-dweller
Oyster, 44 mm, Oystersteel
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Watch Features

For extreme depths

Oystersteel

Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, superalloys 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.

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Black Dial

The dial is the distinctive face of a Rolex watch, the feature most responsible for its identity and readability. Characterised by hour markers fashioned from 18 ct gold to prevent tarnishing, every Rolex dial is designed and manufactured in-house, largely by hand to ensure perfection.

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.

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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.

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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

Reference 126660
Model case
Model case
Oyster, 44 mm, Oystersteel
Oyster architecture
Monobloc middle case, screw-down case back and winding crown. Rolex Ringlock System case architecture with Helium escape valve
Diameter
44 mm
Material
Oystersteel
Bezel
Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in ceramic, numerals and graduations coated in platinum
Winding crown
Screw-down, Triplock triple waterproofness system
Crystal
Domed, 5.5 mm-thick scratch-resistant sapphire
Water-resistance
Waterproof to 3,900 metres / 12,800 feet, helium escape valve
Movement
Movement
Perpetual, mechanical, self-winding
Calibre
3235, Manufacture Rolex
Precision
-2/+2 sec/day, after casing
Functions
Centre hour, minute and seconds hands Instantaneous date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting
Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
Winding
Bidirectional self-winding via Perpetual rotor
Power reserve
Approximately 70 hours
Bracelet
Bracelet
Oyster, flat three-piece links
Bracelet material
Oystersteel
Clasp
Folding Oysterlock safety clasp with Rolex Glidelock extension system. Fliplock extension link
Dial
Dial
Black
Details
Highly legible Chromalight display with long-lasting blue luminescence
Certification
Superlative Chronometer (COSC + Rolex certification after casing)