ROTATABLE BEZEL WITH RAISED GRADUATIONS
The Yacht-Master is easily recognized by its bidirectional rotatable 60-minute graduated bezel made entirely from precious metal – Everose gold or platinum – or fitted with a Cerachrom insert in high-technology ceramic. The raised, polished graduations and numerals stand out clearly against a matt background. This distinctive and functional bezel enables the wearer to read time intervals, such as the sailing time between two buoys, and plays a full part in the visual identity of the watch. The bezel can be turned with ease thanks to its knurled edge, which offers excellent grip.

CHROMALIGHT DISPLAY
The Yacht-Master offers great legibility in all circumstances, even in the dark, thanks to its Chromalight display: the large hour markers and broad hands are filled or coated with a luminescent material emitting a long-lasting blue glow.

THE OYSTER CASE, SYMBOL OF WATERPROOFNESS
The Yacht-Master’s Oyster case, 37 mm, 40 mm, or 42 mm in diameter and guaranteed waterproof to a depth of 100 metres (330 feet), is a paragon of robustness and reliability. The middle case is crafted from a solid block of Oystersteel, RLX titanium or 18 ct yellow, white or Everose gold. The case back, edged with fine fluting, is hermetically screwed down with a special tool employed by approved watchmakers. The Triplock winding crown, fitted with a triple waterproofness system and protected by an integral crown guard, screws down securely against the case. The crystal, with a Cyclops lens at 3 o’clock for easy reading of the date, is made of virtually scratchproof sapphire and benefits from an anti-reflective coating. The waterproof Oyster case provides optimal protection for the movement it houses.

BRACELET AND CLASP: SECURITY AND COMFORT
The Rolesium versions (combining Oystersteel and platinum) and the Everose Rolesor versions (combining Oystersteel and Everose gold) of the Yacht-Master 37 and the Yacht-Master 40, as well as the Yacht-Master 42 in RLX titanium, are fitted on a three-piece link Oyster bracelet, equipped with the Easylink comfort extension link. This system, developed by Rolex, allows the wearer to easily increase the bracelet length by approximately 5 mm, for additional comfort in any circumstance. On the Yacht-Master 42 in RLX titanium, the bracelet includes ceramic inserts – designed by Rolex and patented – around the pins inside the links to help prevent premature wear and to enhance its flexibility on the wrist.

The Yacht-Master 37 and Yacht-Master 40 in 18 ct Everose gold, as well as the Yacht-Master 42 in 18 ct yellow or white gold, are fitted on an Oysterflex bracelet, composed of two flexible, curved metal blades – one for each bracelet section – overmoulded with high-performance black elastomer. This Rolex-designed, patented bracelet is furnished with the Rolex Glidelock extension system, also developed by the brand and patented. On the Oysterflex bracelet, this inventive toothed mechanism has six notches of approximately 2.5 mm, allowing the bracelet length to be effortlessly adjusted by around 15 mm.

The Oyster and Oysterflex bracelets on the Yacht-Master models are equipped with an Oysterlock safety clasp, designed by Rolex, which prevents accidental opening.

CALIBRES 2236 AND 3235
Yacht-Master models are equipped with calibre 2236 (Yacht-Master 37) or calibre 3235 (Yacht-Master 40 and Yacht-Master 42), self-winding mechanical movements entirely developed and manufactured by Rolex. A distillation of technology, these movements carry a number of patents. They offer outstanding performance, particularly in terms of precision, power reserve, convenience and reliability.

Calibre 2236 is fitted with the patented Syloxi hairspring in silicon, manufactured by the brand. In addition to resisting strong magnetic fields, this hairspring offers great stability in the face of temperature variations as well as high resistance to shocks. Its geometry, which is also patented, ensures the movement’s regularity in any position. Calibre 2236 includes a paramagnetic nickel-phosphorus escape wheel.

Calibre 3235 incorporates the patented Chronergy escapement, made of nickel-phosphorus, which combines high energy efficiency with great dependability and is also resistant to strong magnetic fields. This movement is additionally fitted with the blue Parachrom hairspring. Manufactured in a paramagnetic alloy enabling it to withstand strong magnetic fields, this hairspring also offers great stability in the face of temperature variations as well as high resistance to shocks. It is equipped with a Rolex overcoil, ensuring the calibre’s regularity in any position.

The oscillator of these two calibres has a balance wheel with variable inertia regulated extremely precisely via gold Microstella nuts. It is held firmly in place by a height-adjustable traversing bridge enabling very stable positioning to increase shock resistance. The oscillator is also mounted on the Rolex-designed, high-performance Paraflex shock absorbers, further enhancing the movements’ shock resistance.

Calibre 2236 and calibre 3235 are equipped with a self-winding system via a Perpetual rotor, which ensures continuous winding of the mainspring by harnessing the movements of the wrist to provide a constant source of energy. Calibre 2236 offers a power reserve of approximately 55 hours, while the power reserve of calibre 3235 extends to approximately 70 hours thanks to its barrel architecture and the escapement’s superior efficiency.

The Yacht-Master’s movements are beautifully finished and decorated. Since 2023, calibre 3235 has also been marked with the words ‘Chronometer Perpetual’ and ‘Superlative Adjusted’ engraved on the oscillating weight and on the bridges, respectively.

THE YACHT-MASTER, SUPERLATIVE CHRONOMETER CERTIFIED
Like all Rolex watches, the Yacht-Master is covered by the Superlative Chronometer certification. Symbolized by a green seal, this in-house certification is strictly controlled by internationally recognized, independent Swiss entities. It ensures the excellent on-the-wrist performance of each of the brand’s watches and is coupled with an international five-year guarantee.

In 2026, the Superlative Chronometer certification was expanded to seven testing criteria. Resistance to magnetism, reliability and durability were added to the criteria for precision, waterproofness, self-winding and autonomy, established when the certification was redefined 
in 2015.

The requirements in terms of precision are particularly stringent. Each Rolex movement is first officially certified as a chronometer. This means that, having passed a series of eliminating tests, it fulfils the criteria governing the ‘chronometer’ designation for wristwatches. For the category of calibres concerned, which includes all Rolex movements, the tolerated rate deviation is –4 and +6 seconds per day.

After casing the movement, the precision is then tested again, following a protocol developed by Rolex that simulates real-life wearing conditions, to meet even stricter criteria: the watch’s accuracy must be between –2 and +2 seconds per day. The rate deviation tolerated by the brand for a finished watch is therefore significantly smaller than that accepted for official certification of the movement alone.