18 ct gold
By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the highest quality 18 ct gold alloys. According to the proportion of silver, copper, platinum or palladium added, different types of 18 ct gold are obtained: yellow, pink or white. They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment, before the gold is formed and shaped with the same painstaking attention to quality. Rolex's commitment to excellence begins at the source.
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 President bracelet
The design, development and production of Rolex bracelets and clasps, as well as the stringent tests they face, involve advanced high technology. And, as with all the components of the watch, aesthetic controls by the human eye guarantee impeccable beauty. The President bracelet, with its semi-circular three piece links, was created in 1956 for the launch of the Oyster Perpetual Day-Date. It represents the ultimate in refinement and comfort and is always made of carefully selected precious metals.
3255 Movement
The Day-Date 40 is equipped with a new-generation movement, calibre 3255, entirely developed and manufactured by Rolex for a superlative level of performance. 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 magnetism, ease of use and reliability.
Monday, Lundi
Initially presented in 1956, the Day-Date was a world first. The first watch to indicate the day of the week spelt out in full. Worn by many world leaders, the Day-Date is available with a bespoke day display in a wide choice of languages.
Specifications
- Model case
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Model caseOyster, 40 mm, yellow gold
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Oyster architectureMonobloc middle case, screw-down case back and winding crown
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Diameter40 mm
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Material18 ct yellow gold
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BezelFluted
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Winding crownScrew-down, Twinlock double waterproofness system
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CrystalScratch-resistant sapphire, Cyclops lens over the date
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Water-resistanceWaterproof to 100 metres / 330 feet
- Movement
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MovementPerpetual, mechanical, self-winding
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Calibre3255, Manufacture Rolex
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Precision-2/+2 sec/day, after casing
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FunctionsCentre hour, minute and seconds hands Instantaneous day and 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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BraceletPresident, semi-circular three-piece links
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Bracelet material18 ct yellow gold
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ClaspConcealed folding Crownclasp
- Dial
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DialBlack, diagonal motif
- Certification
- Superlative Chronometer (COSC + Rolex certification after casing)
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