REFERENCE
278383RBR

MODEL CASE
Oyster, 31 mm, Oystersteel, yellow gold and diamonds

OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown

DIAMETER
31 mm

MATERIAL
Yellow Rolesor - combination of Oystersteel and yellow gold

BEZEL
Set with diamonds

WINDING CROWN
Screw-down, Twinlock double waterproofness system

CRYSTAL
Scratch-resistant sapphire, Cyclops lens over the date

WATER-RESISTANCE
Waterproof to 100 metres / 330 feet

MOVEMENT
Perpetual, mechanical, self-winding

CALIBRE
2236, Manufacture Rolex

PRECISION
-2/+2 sec/day, after casing

OSCILLATOR
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers

WINDING
Bidirectional self-winding via Perpetual rotor

POWER RESERVE
Approximately 55 hours

BRACELET
Oyster, three-piece solid links

BRACELET MATERIAL
Yellow Rolesor - combination of Oystersteel and yellow gold

CLASP
Folding Oysterclasp with Easylink 5 mm comfort extension link

DIAL
Dark grey set with diamonds

GEM SETTING
Diamonds in 18 ct gold settings

CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)

DATEJUST 31 m278383rbr-0021
Dark Grey Dial

Dark Grey Dial

This dial features diamonds in 18 ct gold settings. 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.

Diamond-Set Bezel

Gem-setters, like sculptors, finely carve the precious metal to hand-shape the seat in which each gemstone will be perfectly lodged. With the art and craft of a jeweller, the stone is placed and meticulously aligned with the others, then firmly secured in its gold or platinum setting. Besides the intrinsic quality of the stones, several other criteria contribute to the beauty of Rolex gem-setting: the precise alignment of the height of the gems, their orientation and position, the regularity, strength and proportions of the setting as well as the intricate finishing of the metalwork. A sparkling symphony to enhance the watch and enchant the wearer.

Diamond-Set Bezel
Yellow Rolesor

Yellow Rolesor

Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability. Together, they harmoniously combine the best of their properties. A true Rolex signature, Rolesor has featured on Rolex models since the early 1930s, and was trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.

DATEJUST 31 m278383rbr-0021

REFERENCE
278383RBR

MODEL CASE
Oyster, 31 mm, Oystersteel, yellow gold and diamonds

OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown

DIAMETER
31 mm

MATERIAL
Yellow Rolesor - combination of Oystersteel and yellow gold

BEZEL
Set with diamonds

WINDING CROWN
Screw-down, Twinlock double waterproofness system

CRYSTAL
Scratch-resistant sapphire, Cyclops lens over the date

WATER-RESISTANCE
Waterproof to 100 metres / 330 feet

MOVEMENT
Perpetual, mechanical, self-winding

CALIBRE
2236, Manufacture Rolex

PRECISION
-2/+2 sec/day, after casing

OSCILLATOR
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers

WINDING
Bidirectional self-winding via Perpetual rotor

POWER RESERVE
Approximately 55 hours

BRACELET
Oyster, three-piece solid links

BRACELET MATERIAL
Yellow Rolesor - combination of Oystersteel and yellow gold

CLASP
Folding Oysterclasp with Easylink 5 mm comfort extension link

DIAL
Dark grey set with diamonds

GEM SETTING
Diamonds in 18 ct gold settings

CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)

Dark Grey Dial

Dark Grey Dial

This dial features diamonds in 18 ct gold settings. 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.

Diamond-Set Bezel

Diamond-Set Bezel

Gem-setters, like sculptors, finely carve the precious metal to hand-shape the seat in which each gemstone will be perfectly lodged. With the art and craft of a jeweller, the stone is placed and meticulously aligned with the others, then firmly secured in its gold or platinum setting. Besides the intrinsic quality of the stones, several other criteria contribute to the beauty of Rolex gem-setting: the precise alignment of the height of the gems, their orientation and position, the regularity, strength and proportions of the setting as well as the intricate finishing of the metalwork. A sparkling symphony to enhance the watch and enchant the wearer.

Yellow Rolesor

Yellow Rolesor

Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability. Together, they harmoniously combine the best of their properties. A true Rolex signature, Rolesor has featured on Rolex models since the early 1930s, and was trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.