Description
Make a date of a day
This Oyster Perpetual Datejust 31 in Oystersteel and yellow gold features a dark grey, diamond-set dial and a Jubilee bracelet.
Dark Grey Dial
A watchmaking technique
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.
Fluted bezel
A Rolex signature
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, in gold on this Datejust 31.
Yellow Rolesor
A meeting of two metals
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.
The Jubilee bracelet
Supple and comfortable
The design, development and production of Rolex bracelets and clasps, as well as the stringent tests they face, involve advanced high technology.
And, as with all the components of the watch, aesthetic controls by the human eye guarantee impeccable beauty. The Jubilee, a supple and comfortable five-piece link metal bracelet, was designed and made especially for the launch of the Oyster Perpetual Datejust in 1945.
More Datejust technical details
Reference 278273
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Model case
Oyster, 31 mm, Oystersteel and yellow gold
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Oyster architecture
Monobloc middle case, screw-down case back and winding crown
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Diameter
31 mm
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Material
Yellow Rolesor – combination of Oystersteel and yellow gold
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Bezel
Fluted
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Winding crown
Screw-down, Twinlock double waterproofness system
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Crystal
Scratch-resistant sapphire, Cyclops lens over the date
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Water resistance
Waterproof to 100 metres / 330 feet
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Movement
Perpetual, mechanical, self-winding
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Calibre
2236, Manufacture Rolex
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Precision
-2/+2 sec/day, after casing
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Functions
Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting
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Oscillator
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers
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Winding
Bidirectional self-winding via Perpetual rotor
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Power reserve
Approximately 55 hours
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Bracelet
Jubilee, five-piece links
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Material
Yellow Rolesor – combination of Oystersteel and yellow gold
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Clasp
Concealed folding Crownclasp
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Dial
Dark grey set with diamonds
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Gem settings
Diamonds in 18 ct gold settings
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Certification
Superlative Chronometer (COSC + Rolex certification after casing)
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