December 28, 2020

Rolex Datejust 31 Ref. 278273

Rolex Datejust 31 Ref. 278273-0016 - Mamic 1970

Rolex is introducing Oyster Perpetual Datejust 31 Ref. 278273, in a yellow Rolesor version, combining Oystersteel and 18 ct yellow gold, and equipped with calibre 2236.

ROLEX DATEJUST 31 REF. 278273

The new generation of the Rolex Oyster Perpetual Datejust 31 in yellow Rolesor presented in 2019. offers distinctive and elegant new dials. Their Oyster case features an 18 ct gold bezel as well as the centre links of the bracelet. New Datejust 31 models are fitted with calibre 2236 first introduced on Datejust 31 in 2018.

Oyster Perpetual Datejust 31 Ref. 278273 in a yellow Rolesor version, combining Oystersteel and 18 ct yellow gold, is fitted on a Jubilee bracelet pairs an olive green, sunray-finish dial with 18 ct yellow gold hands and Roman numerals – the VI set with 11 diamonds. The light reflections on the case sides and lugs highlight the elegant profile of the 31 mm Oyster case, which is fitted with a fluted bezel.

Datejust 31 Ref. 278273 features 18 ct yellow gold hands and Roman numerals and the VI set with 11 diamonds.

TIMELESS STYLE

Rolex’s Datejust is the archetype of the classic watch thanks to functions and aesthetics that never go out of fashion. Launched in 1945, it was the first self-winding waterproof chronometer wristwatch to display the date in a window at 3 o’clock on the dial, and consolidated all the major innovations that Rolex had contributed to the modern wristwatch until then. The Datejust has spanned eras while retaining the enduring aesthetic codes that make it so instantly recognizable.

Rolex’s Datejust is the archetype of the classic watch thanks to functions and aesthetics that never go out of fashion.

Rolex Datejust 31 Ref. 278273 © Rolex

OLIVE GREEN DIAL

The sunray finish creates delicate light reflections on many dials in the Oyster Perpetual collection. It is obtained using masterful brushing techniques that create grooves running outwards from the centre of the dial. Light is diffused consistently along each engraving, creating a characteristic subtle glow that moves depending on the position of the wrist.

Once the sunray finish has been completed, the dial colour is applied using Physical Vapour Deposition or electroplating. A light coat of varnish gives the dial its final look.

Datejust 31 Ref. 278273 features sunray-finish olive green dial.

Rolex Datejust 31 Ref. 278273 © Rolex

THE FLUTED BEZEL

The Rolex fluted bezel is a mark of distinction. Originally, the fluting of the Oyster bezel had a functional purpose: it served to screw the bezel onto the case helping to ensure the waterproofness of the watch. It was therefore identical to the fluting on the case back, which was also screwed onto the case for waterproofness, using specific Rolex tools. Over time, the fluting became an aesthetic element, a genuine Rolex signature feature. Today the fluted bezel is a mark of distinction, always in gold.

The Rolex fluted bezel is a mark of distinction which is, without exception, always in gold.

Rolex Datejust 31 Ref. 278273 © Rolex

THE OYSTER CASE, SYMBOL OF WATERPROOFNESS

A paragon of robustness and elegance, the Oyster case of the Datejust 31 Ref. 278273 is guaranteed waterproof to a depth of 100 metres (330 feet). Its middle case is crafted from a solid block of particularly corrosion-resistant Oystersteel. The case back, edged with fine fluting, is hermetically screwed down with a special tool that allows only Rolex watchmakers to access the movement. The winding crown, fitted with the Twinlock double waterproofness system, screws down securely against the case. The crystal is made of virtually scratch-proof sapphire and is fitted with a Cyclops lens at 3 o’clock for easy reading of the date. The waterproof Oyster case provides optimum protection for the Datejust 31’s high-precision movement.

The Oyster case of the Datejust 31 is made of Oystersteel and 18 ct yellow gold and waterproof to a depth of 100 metres (330 feet).

Rolex Datejust 31 Ref. 278273-0016 - Mamic 1970
Rolex Datejust 31 Ref. 278273 © Rolex

ROLESOR, A MARRIAGE OF GOLD AND OYSTERSTEEL

Rolesor, the combination of gold and steel on a Rolex watch, has been a signature feature of the brand since 1933 when the name was registered. It is a meeting of two metals: one, noble and precious, attractive for its lustre and stability; the other, highly resistant, known for its strength and reliability. All of these qualities perfectly mirror the elegance and performance that come together in a Rolex watch. On the yellow Rolesor version of the Datejust 31, the bezel, winding crown and centre links of the bracelet are in 18 ct yellow gold, while the case and outer links of the bracelet are in Oystersteel. 

Rolesor is the combination of two metals: noble and precious gold, attractive for its lustre and stability; and steel known for its resistance to corrosion, ensures strength and reliability.

Rolex Rolesor - Mamic 1970
Yellow Rolesor © Rolex

JUBILEE BRACELET

The yellow Rolesor featured version of the Datejust 31 is fitted with a Jubilee bracelet. Supple and comfortable, the five-piece link Jubilee bracelet was specially created for the launch of the Oyster Perpetual Datejust in 1945. The Jubilee bracelet on the yellow Rolesor version is equipped with an elegant concealed folding Crownclasp. A concealed attachment system ensures seamless visual continuity between the bracelet and case.

This version of the Datejust 31 is fitted with a supple and comfortable five-piece link Jubilee bracelet.

Rolex Datejust 31 Ref. 278273 © Rolex

PERPETUAL CALIBRE 2236

The new version of the Datejust 31 is equipped with calibre 2236, a new-generation movement entirely developed and manufactured by Rolex. A consummate demonstration of technology, at the forefront of the art of watchmaking, this self-winding mechanical movement led to the filing of several patents and offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability.

Calibre 2236 is fitted with a Syloxi hairspring, patented and produced by Rolex. This silicon hairspring remains up to 10 times more precise than a traditional hairspring in case of shocks, and its patented geometry ensures its regularity in any position. The movement also contains a paramagnetic nickel-phosphorus escape wheel. The oscillator is fitted on the Rolex-designed and -patented high- performance Paraflex shock absorbers, increasing the movement’s shock resistance.

Calibre 2236 is equipped with a self-winding module via a Perpetual rotor and offers a power reserve of approximately 55 hours.

Calibre 2236 offers a power reserve of approximately 55 hours. 

Rolex Movement 2236 - Mamic 1970
Calibre 2236 © Rolex

SUPERLATIVE CHRONOMETER CERTIFICATION 

Like all Rolex watches, each Datejust is covered by the Superlative Chronometer certification redefined by Rolex in 2015. This exclusive designation testifies that every watch leaving the brand’s workshops has successfully undergone a series of tests conducted by Rolex in its own laboratories according to its own criteria. These certification tests apply to the fully assembled watch, after casing the movement, guaranteeing superlative performance on the wrist in terms of precision, power reserve, waterproofness and self-winding. The precision of a Rolex Superlative Chronometer is of the order of −2/+2 seconds per day, or more than twice that required of an official chronometer.

The Superlative Chronometer status is symbolized by the green seal that comes with every Rolex watch and is coupled with an international five-year guarantee.

Superlative Chronometer © Rolex

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