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Rolex - 278343RBR-0018 Datejust 31 Stainless Steel / Yellow Gold / Domed - Diamond / Grey - Roman / Jubilee

Ref. 278343RBR-0018

Rolex Rolex - 278343RBR-0018 Datejust 31 Stainless Steel / Yellow Gold / Domed - Diamond / Grey - Roman / Jubilee
Rolex Rolex - 278343RBR-0018 Datejust 31 Stainless Steel / Yellow Gold / Domed - Diamond / Grey - Roman / Jubilee
Rolex Rolex - 278343RBR-0018 Datejust 31 Stainless Steel / Yellow Gold / Domed - Diamond / Grey - Roman / Jubilee

Case

MaterialYellow Gold, Stainless Steel
Diameter31 mm
CrystalSapphire
WR100 m

Dial

ColorGrey
FinishSunburst
IndexesRoman Numerals Hands: Stick

Movement

Caliber2236
Typeautomatic
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About This Watch

The Rolex Datejust 31 Reference 278343RBR-0018 embodies the quiet confidence of a timepiece that balances tradition with modern refinement. Its case, a harmonious union of stainless steel and yellow gold, frames a grey sunburst dial that exudes understated elegance. The dial’s Roman numerals, rendered in a crisp, legible form, complement the stick hands and the diamond-set bezel, which adds a subtle sparkle without overshadowing the watch’s restrained sophistication. The domed sapphire crystal enhances the dial’s depth, while the Jubilee bracelet—characteristic of the Datejust collection since its 1945 debut—offers a comfortable, polished silhouette that transitions seamlessly from formal occasions to everyday wear. At its core, the watch houses Rolex’s in-house 2236 automatic movement, a testament to the brand’s engineering precision. With a power reserve of approximately 55 hours and a certified chronometer rating, it ensures reliability and accuracy that have long defined Rolex’s reputation.

The 278343RBR family

278343RBR-0018 is one of 24 variants sharing the 278343RBR base reference — same watch underneath, different dial, bezel, or bracelet execution. Browse the others:

+ 15 more variants in this family.

Inside: Caliber 2236

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This self-winding mechanical movement with date display is entirely manufactured by Rolex and inaugurates a new generation of movements. Its design and quality manufacture ensure peerless precision and reliability. Like all Rolex Perpetual movements, the 2236 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. It was first introduced in 2014. It the first movement to be fitted with the Syloxi (silicon) hairspring.

906 other watches in the library run the Rolex 2236.

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