datejust 31 - official rolex website...with bidirectional self-winding via perpetual rotor precision...

B A S E L W O R L D 2 0 1 8

O Y S T E R P E R P E T U A L

D A T E J U S T 3 1

Rolex Baselworld 2018 | pressroom.rolex.com 2

Rolex is introducing the new generation of the Oyster Perpetual Datejust 31, with redesigned case sides and lugs. In 18 ct white, yellow or Everose gold, the new versions are equipped with calibre 2236, at the forefront of watchmaking technology.

Amongst the many combinations available, one, in 18 ct white gold, is fitted with a white mother-of-pearl dial and a diamond-set bezel. Another, in 18 ct yellow gold, features a malachite dial with a Roman VI and IX in 18 ct yellow gold set with diamonds, and a version in 18 ct Everose gold is introduced with a diamond-paved dial inlaid with pink mother-of-pearl butterflies.

Like all Rolex watches, the new-generation Datejust 31 carries the Superlative Chronometer certification, which ensures excellent performance on the wrist.

A N I C O N I C W A T C H

OYSTER PERPETUAL DATEJUST 31

http://pressroom.rolex.com



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 chronom-eter 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. Aesthetically, the Datejust has spanned eras while retaining the enduring codes that today still make it one of the most recognizable of watches.

T I M E L E S S

S T Y L E



The Oyster case of the Datejust 31, guaranteed waterproof to a depth of 100 metres (330 feet), is a paragon of robustness and elegance. Its refined middle case is crafted from a solid block of 18 ct yellow, white or Everose gold. The case back, edged with fine fluting, is her-metically 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, with a Cyclops lens at 3 o’clock for easy reading of the date, is made of virtually scratchproof sapphire. The waterproof Oyster case provides optimum protection for the Datejust 31’s high-precision movement.

T H E O Y S T E R C A S E ,

S Y M B O L O F W A T E R P R O O F N E S S




The new Datejust 31 is equipped with calibre 2236, a new-generation self-winding mechanical movement entirely developed and manufactured by Rolex. Fitted with a Syloxi hairspring in silicon, patented by Rolex, calibre 2236 offers a superla-tive level of chronometric performance. Insensitive to magnetic fields, the Syloxi hairspring provides great stability in the face of temperature vari ations

and remains up to 10 times more precise than a traditional hairspring in case of shocks. Its pat-ented geometry ensures its regularity in any position.

Calibre 2236 is equipped with a self-winding module via a Perpetual rotor and offers a power reserve of approximately 55 hours. This calibre equips the Datejust 31 for the first time.


P E R P E T U A L C A L I B R E

2 2 3 6

Oscillator with Syloxi hairspring

Barrel Paramagnetic escape wheel

Setting crown with Paraflex

shock absorber



The new Datejust 31 watches are fitted on a President bracelet, which benefits from a con-cealed attachment system, ensuring seamless visual continuity between the bracelet and case. The bracelet also includes ceramic inserts inside the links to enhance its flexi bility and longevity, and has a concealed folding Crownclasp.


P R E S I D E N T

B R A C E L E T

Like all Rolex watches, the Datejust 31 is covered by the Superlative Chronometer certification re defined by Rolex in 2015. This exclusive desig-nation testifies that each watch has successfully undergone a series of tests conducted by Rolex in its own laboratories according to its own criteria, which exceed watchmaking norms and standards. The certification applies 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 after casing 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.

S U P E R L A T I V E

C H R O N O M E T E R

C E R T I F I C A T I O N



*COSC + Rolex certification after casing

OYSTER PERPETUAL

D A T E J U S T 3 1Case reference 278289 RBR | Bracelet reference 83369

Category: Oyster Perpetual Classic

Superlative Chronometer certification*

Case

TYPE• Oyster (monobloc middle case,

screw-down case back and winding crown)

DIAMETER• 31 mm

MATERIAL• 18 ct white gold

MIDDLE CASE• 18 ct white gold, polished finish

BEZEL• 18 ct white gold, set with

46 brilliant-cut diamonds

CASE BACK• Solid, screw-down

with fine fluting

WINDING CROWN• Screw-down, Twinlock double

waterproofness system

CRYSTAL• Scratch-resistant sapphire• Cyclops lens over the date

with double anti-reflective coating

WATERPROOFNESS• 100 metres (330 feet)

Movement

CALIBRE • 2236, Manufacture Rolex• Mechanical movement

with bidirectional self-winding via Perpetual rotor

PRECISION• −2 /+2 sec/day, after casing

FUNCTIONS• Centre hour, minute

and seconds hands• Instantaneous date at 3 o’clock

with secure rapid-setting• Stop-seconds for exact time setting

OSCILLATOR• Frequency: 28,800 beats/hour (4 Hz)• Syloxi hairspring in silicon

with patented geometry• Paramagnetic nickel-phosphorus

escape wheel• Balance wheel with variable inertia• High-precision regulating

via two gold Microstella nuts• Traversing balance bridge• High-performance Paraflex

shock absorbers

JEWELLING• 31 rubies

POWER RESERVE• Approximately 55 hours

Dial

MATERIAL • White mother-of-pearl

HOUR MARKERS• 10 diamonds in 18 ct white gold

settings

HANDS• 18 ct white gold

Bracelet

TYPE• President, three-piece solid links

MATERIAL• 18 ct white gold, polished centre

links, satin-finished outer links with polished edges, ceramic inserts

CLASP• Concealed folding Crownclasp




OYSTER PERPETUAL




Case



DIAMETER• 31 mm

MATERIAL• 18 ct yellow gold

MIDDLE CASE• 18 ct yellow gold, polished finish

BEZEL• 18 ct yellow gold, set with



with fine fluting






Movement











shock absorbers



Dial

MATERIAL • Malachite

HOUR MARKERS• Roman VI and IX in 18 ct yellow gold,

set with 24 diamonds

HANDS• 18 ct yellow gold

Bracelet


MATERIAL• 18 ct yellow gold, polished centre






OYSTER PERPETUAL




CASE



DIAMETER• 31 mm

MATERIAL• 18 ct Everose gold

MIDDLE CASE• 18 ct Everose gold, polished finish

BEZEL• 18 ct Everose gold, set with



with fine fluting






Movement











shock absorbers



Dial

MATERIAL • Paved, mother-of-pearl butterfly dial • 18 ct pink gold, set with

262 diamonds and inlaid with pink mother-of-pearl butterflies

HANDS• 18 ct pink gold

Bracelet


MATERIAL• 18 ct Everose gold, polished centre




datejust 31 - official rolex website...with bidirectional self-winding via perpetual rotor precision...

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