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The Rolex Oyster Perpetual Datejust 31

The New Rolex Datejust

The New Rolex Datejust is presented in a white Rolesor version combining Oystersteel and 18 ct white gold. It also features dials in a variety of colours. The index hour markers and Roman numerals are made of 18 ct white gold.

Iconic Aesthetics

The first watch, featuring a bezel set with 46 brilliant-cut diamonds, has an aubergine, sunray-finish dial. A diamond-set Roman VI adorns the watch.

The three other versions boast a mint green, sunray-finish dial, white lacquer dial, or dark grey, sunray-finish dial, and a fluted bezel in 18 ct white gold.

The hands and index hour markers or Roman numerals on all four watches are in 18 ct white gold. The light reflections on the case sides and lugs highlight the elegant profile of the 31 mm Oyster case.

The New Rolex Datejust, Oyster Perpetual Datejust 31

At the forefront of watchmaking technology, these new watches feature calibre 2236 movement.

Also, like all Rolex watches, the Oyster Perpetual Datejust 31 carries the Superlative Chronometer certification ensuring excellent performance on the wrist.

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. This version 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 characteristics that make it so instantly recognizable.

Rolesor, a Marriage of Gold and Oystersteel

Rolesor, the combination of 18 ct gold and Oystersteel on a Rolex watch has been a signature feature of the brand since 1933. It is a meeting of two metals: one, noble and precious, attractive for its lustre and stability; the other, known for its resistance to corrosion, ensures strength and reliability. All of these qualities perfectly mirror the elegance and performance that come together in a Rolex watch.

The new white Rolesor versions of the Datejust 31 offers a bezel of 18 ct white gold. Whereas, the winding crown, middle case, bracelet and clasp are in Oystersteel.

The Oyster Case, Symbol of Waterproofness 

The Oyster case of the Datejust 31 is guaranteed to be waterproof to a depth of 100 metres. In addition, the middle case is crafted from a solid block of Oystersteel, a particularly corrosion-resistant alloy. Equally important, 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 Twinlock winding crown, fitted with a double waterproofness system, screws down securely against the case. Furthermore, the crystal is virtually scratchproof sapphire, with a Cyclops lens at 3 o’clock for easy reading of the date. Hence, the waterproof Oyster case provides optimum protection for the watch’s movement.

Perpetual Calibre 2236

The new versions of the Datejust 31 feature calibre 2236, a movement entirely developed and manufactured by Rolex. At the forefront of watchmaking technology, this self-winding mechanical movement led to the filing of several patents. In addition, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability.

Calibre 2236 features 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. Its patented geometry ensures the calibre’s regularity in any position. In addition, the movement contains a paramagnetic nickel-phosphorus escape wheel. The oscillator fitted on the Rolex-designed and -patented high-performance Paraflex shock absorbers increases the movement’s shock resistance.

Calibre 2236 features a self-winding module via a Perpetual rotor. It also offers a power reserve of approximately 55 hours.

Jubilee and Oyster Bracelets

These white Rolesor versions of the Datejust 31 feature an Oyster or Jubilee bracelet. Developed at the end of the 1930s, the three-piece link Oyster bracelet is known for its robustness.

The five-piece link Jubilee bracelet specially created for the launch of the Oyster Perpetual Datejust in 1945 is supple and comfortable.

The Oyster bracelet on the versions with either an aubergine or white lacquer dial features a folding Oysterclasp and the Easylink comfort extension link. Developed by Rolex, it allows the wearer to easily adjust the bracelet length by approximately 5 mm. On the other hand, the Jubilee bracelet on versions with a mint green or dark grey dial boasts an elegant concealed folding Crownclasp.

Also, a concealed attachment system ensures seamless visual continuity between the bracelet and case.

Superlative Chronometer Certification

Like all Rolex watches, the Superlative Chronometer certification redefined by Rolex in 2015 covers the Oyster Perpetual Datejust 31.

This exclusive designation testifies that every watch leaving the brand’s workshops has successfully undergone a series of tests. Rolex conducts these tests 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.

Furthermore, 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 green seal that comes with every Rolex watch symbolizes the Superlative Chronometer status and includes an international five-year guarantee.

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