Rolex
Datejust 31
Oyster, 31 mm, yellow gold
Reference
278278
Model Case
Oyster, 31 mm, yellow gold
Oyster Architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
31 mm
Material
18 ct yellow gold
Bezel
Fluted
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
President, semi-circular three-piece links
Bracelet Material
18 ct yellow gold
Clasp
Concealed folding Crownclasp
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
The sunray finish on Rolex dials is a predominant method in watchmaking of achieving pure metallic colour dials such as shades of silver grey, rhodium or ruthenium.
The Fluted Bezel
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, always in gold.
18 ct yellow gold
By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the highest quality 18 ct gold alloys. According to the proportion of silver, copper, platinum or palladium added, different types of 18 ct gold are obtained: yellow, pink or white. They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment, before the gold is formed and shaped with the same painstaking attention to quality. Rolex's commitment to excellence begins at the source.
MODEL AVAILABILITY
All Rolex watches are assembled by hand with the utmost care to ensure exceptional quality. Such high standards naturally restrict Rolex production capacity and, at times, the demand for Rolex watches outpaces this capacity.
Therefore, the availability of certain models may be limited. New Rolex watches are exclusively sold by Official Rolex Retailers, who receive regular deliveries and independently manage the allocation and sales of watches to customers.
Siam Swiss is proud to be part of the worldwide network of Official Rolex Retailers and can provide information on the availability of Rolex watches.
The classic Rolex Datejust is the archetype of the modern watch, thanks to aesthetics and functions that transcend changes in fashion. This year, Rolex presents four new white Rolesor versions (combining Oystersteel and 18 ct white gold) of the Datejust 31. Aesthetically, the Datejust has spanned eras, while retaining the enduring codes that make it one of the most recognized and recognizable of watches.
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