Rolex Oyster Perpetual Datejust 31 New White Rolesor Versions

Rolex has created four new white Rolesor versions (combining Oystersteel and 18 ct white gold) of the Oyster Perpetual Datejust 31.

The first watch, featuring a bezel set with 46 brilliant-cut diamonds, has an aubergine, sunray-finish dial that is adorned with a diamond-set Roman VI. The three other versions are fitted respectively with 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 also in 18 ct white gold.

Rolex Oyster Perpetual Datejust 31 New White Rolesor Versions

The light reflections on the case sides and lugs highlight the elegant profile of the 31mm Oyster case. These new watches are equipped with calibre 2236. Like all Rolex watches, the Oyster Perpetual Datejust 31 carries the Superlative Chronometer certification.

On the new white Rolesor versions of the Datejust 31, the bezel is made of 18 ct white gold, while the winding crown, middle case, bracelet and clasp are in Oystersteel.

Rolex Oyster Perpetual Datejust 31 New White Rolesor Versions

The Oyster case of the Datejust 31 is guaranteed waterproof to a depth of 100 metres (330 feet). Its middle case is crafted from a solid block of Oystersteel, a particularly corrosion-resistant alloy. 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. The crystal is made of virtually scratchproof 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 watch’s movement.

Rolex Oyster Perpetual Datejust 31 New White Rolesor Versions

The new versions of the Datejust 31 are equipped with calibre 2236, a movement entirely developed and manufactured by Rolex. 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 the calibre’s 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.

These white Rolesor versions of the Datejust 31 are fitted with an Oyster or Jubilee bracelet. Developed at the end of the 1930s, the three-piece link Oyster bracelet is known for its robustness. Supple and comfortable, the five-piece link Jubilee bracelet was specially created for the launch of the Oyster Perpetual Datejust in 1945.

Rolex Oyster Perpetual Datejust 31 with Aubergine dial
Rolex Oyster Perpetual Datejust 31 with Aubergine dial

The Oyster bracelet on the versions with either an aubergine or white lacquer dial is fitted with 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.

Rolex Oyster Perpetual Datejust 31 with White lacquer dial
Rolex Oyster Perpetual Datejust 31 with White lacquer dial

The Jubilee bracelet on versions with a mint green or dark grey dial is equipped with an elegant concealed folding Crownclasp. In addition, a concealed attachment system ensures seamless visual continuity between the bracelet and case.

Rolex Oyster Perpetual Datejust 31 with Mint green dial
Rolex Oyster Perpetual Datejust 31 with Mint green dial

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

Rolex Oyster Perpetual Datejust 31 with Dark grey dial
Rolex Oyster Perpetual Datejust 31 with Dark grey dial

Technical details

Model: Oyster Perpetual Datejust 31 with Aubergine dial

  • Case reference: 278384 RBR
  • Bracelet reference: 72360

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 31 mm
Material: Oystersteel and 18 ct white gold (white Rolesor)
Middle case: Oystersteel, polished finish
Bezel: 18 ct white gold, set with 46 brilliant-cut diamonds (approx. 1.02 ct)
Case back: Oystersteel, solid, screw-down with fine fluting
Winding crown: Twinlock in Oystersteel, screw-down, double waterproofness system
Crystal: Scratch-resistant sapphire crystal with Cyclops lens over the date with double anti-reflective coating
Waterproofness: 100 metres (330 feet)

Dial
Aubergine, gloss, sunray finish
Roman numerals in 18 ct white gold, VI set with 11 diamonds
Hands in 18 ct white gold

Bracelet
Oyster, three-piece solid links
Oystersteel, polished centre links, satin-finished outer links with polished edges
Folding Oysterclasp
Easylink comfort extension link (approx. 5 mm)

Certification
Superlative Chronometer (COSC + Rolex certification after casing)

Guarantee
International five-year guarantee

Model: Oyster Perpetual Datejust 31 with Mint green dial

  • Case reference: 278274
  • Bracelet reference: 63360

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 31 mm
Material: Oystersteel and 18 ct white gold (white Rolesor)
Middle case: Oystersteel, polished finish
Bezel: 18 ct white gold, fluted
Case back: Oystersteel, solid, screw-down with fine fluting
Winding crown: Twinlock in Oystersteel, screw-down, double waterproofness system
Crystal: Scratch-resistant sapphire crystal with Cyclops lens over the date with double anti-reflective coating
Waterproofness: 100 metres (330 feet)

Dial
Mint green, gloss, sunray finish
Hour markers in 18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Hands in 18 ct white gold. Highly legible Chromalight (long-lasting luminescence, blue glow) apart from the seconds hand

Bracelet
Jubilee, five-piece solid links
Oystersteel, polished centre links, satin-finished outer links with polished edges
Concealed folding Crownclasp

Certification
Superlative Chronometer (COSC + Rolex certification after casing)

Guarantee
International five-year guarantee

Model: Oyster Perpetual Datejust 31 with White lacquer dial

  • Case reference: 278274
  • Bracelet reference: 72360

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 31 mm
Material: Oystersteel and 18 ct white gold (white Rolesor)
Middle case: Oystersteel, polished finish
Bezel: 18 ct white gold, fluted
Case back: Oystersteel, solid, screw-down with fine fluting
Winding crown: Twinlock in Oystersteel, screw-down, double waterproofness system
Crystal: Scratch-resistant sapphire crystal with Cyclops lens over the date with double anti-reflective coating
Waterproofness: 100 metres (330 feet)

Dial
White lacquer
Roman numerals in 18 ct white gold
Hands in 18 ct white gold

Bracelet
Oyster, three-piece solid links
Oystersteel, polished centre links, satin-finished outer links with polished edges
Folding Oysterclasp
Easylink comfort extension link (approx. 5 mm)

Certification
Superlative Chronometer (COSC + Rolex certification after casing)

Guarantee
International five-year guarantee

Model: Oyster Perpetual Datejust 31 with Dark grey dial

  • Case reference: 278274
  • Bracelet reference: 63360

Case
Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 31 mm
Material: Oystersteel and 18 ct white gold (white Rolesor)
Middle case: Oystersteel, polished finish
Bezel: 18 ct white gold, fluted
Case back: Oystersteel, solid, screw-down with fine fluting
Winding crown: Twinlock in Oystersteel, screw-down, double waterproofness system
Crystal: Scratch-resistant sapphire crystal with Cyclops lens over the date with double anti-reflective coating
Waterproofness: 100 metres (330 feet)

Dial
Dark grey, gloss, sunray finish
Hour markers in 18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Hands in 18 ct white gold. Highly legible Chromalight (long-lasting luminescence, blue glow) apart from the seconds hand

Bracelet
Jubilee, five-piece solid links
Oystersteel, polished centre links, satin-finished outer links with polished edges
Concealed folding Crownclasp

Certification
Superlative Chronometer (COSC + Rolex certification after casing)

Guarantee
International five-year guarantee

Movement specifications

Movement
Calibre 2236, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision: −2 /+2 sec/day, after casing
Jewelling: 31 rubies
Power reserve: Approximately 55 hours

Oscillator
• Frequency: 28,800 beats/hour (4 Hz)
• Syloxi hairspring in silicon with patented geometry
• Balance wheel with variable inertia
• High-precision regulating via two gold Microstella nuts
• Traversing balance bridge
• High-performance Paraflex shock absorbers

Escapement
• Paramagnetic nickel-phosphorus escape wheel

Functions
Centre hour, minute and seconds hands
Instantaneous date at 3 o’clock with secure rapid-setting
Stop-seconds for exact time setting