Datejust 31 Yellow Gold / Diamond / Champagne - Diamond / Oyster

About This Watch

The Rolex Datejust 31, in its 278288rbr-0012 iteration, embodies the quiet authority of a timepiece that balances tradition with refinement. The yellow gold case, polished to a warm luster, frames a champagne dial whose sunburst finish catches light with a subtle, rhythmic complexity. Gem-set indexes and a bezel, each diamond meticulously placed, add a touch of understated opulence without overwhelming the eye. This reference, while rooted in the Datejust collection’s enduring legacy—first introduced in 1945 as a symbol of accessible luxury—carries a modern elegance that speaks to contemporary sensibilities. The 31mm diameter, paired with a 16mm lug width, ensures a presence that is both intimate and commanding, a fit for wrists that demand precision without sacrificing presence. Beneath the sapphire crystal lies the Caliber 2236, a self-winding movement certified as a chronometer for its accuracy and resilience. Its 38-hour power reserve and date function, discreetly integrated into the dial, reflect Rolex’s mastery of mechanical engineering. The closed case back, while not a display of inner workings, reinforces the watch’s commitment to durability and discretion. This piece is for those who value subtlety in grandeur—a collector seeking a timepiece that transcends trends, or a professional who demands reliability in moments of significance. It is equally at home in the quiet precision of a boardroom or the quiet dignity of a formal evening, a companion that requires no introduction yet leaves an indelible impression.

In Context

At 31 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 55 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

278288rbr-0012 is one of 15 executions of the 278288rbr base reference. Underneath they are the same watch; what separates this one is a champagne sunburst dial and a yellow gold case.

Rolex

Green · Yellow Gold

278288rbr-0003 · 31 mm

Rolex

Green · Yellow Gold

278288rbr-0004 · 31 mm

Rolex

White · Yellow Gold

278288rbr-0008 · 31 mm

Rolex

White · Yellow Gold

278288rbr-0010 · 31 mm

Rolex

White · Yellow Gold

278288rbr-0011 · 31 mm

Rolex

White · Yellow Gold

278288rbr-0013 · 31 mm

Rolex

Green · Yellow Gold

278288rbr-0014 · 31 mm

Rolex

Silver · Yellow Gold

278288rbr-0019 · 31 mm

+ 6 more variants in this family.

The 2236 is the Rolex movement inside more watches in this library than any other: 907, in the 28 mm Lady-Datejust and the 31 mm Datejust 31. It was the first Rolex caliber with a silicon hairspring. Introduced in 2014 in the Pearlmaster 34, it is a 20 mm automatic with a date, 31 jewels, a 55-hour reserve and a beat of 28,800 vph, certified by the COSC and then tested again by Rolex after casing to the Superlative Chronometer tolerance of two seconds a day. Its distinction is the Syloxi hairspring: silicon, immune to magnetism, etched to a patented geometry that keeps the spring concentric in every position, and paired with Paraflex shock absorbers. The larger Rolex calibers kept the Parachrom alloy spring; Syloxi did not reach a men's movement until the 7140 of 2023. The [2236 piece](/blog/the-rolex-2236-the-most-common-movement-in-this-library) sets out that history. In the library it powers 488 [Datejust 31](/brands/rolex/datejust-31) references, the seven-digit 2782xx generation of 2020, 399 [Lady-Datejusts](/brands/rolex/lady-datejust) of the 2791xx generation of 2015, 15 [Pearlmasters](/brands/rolex/pearlmaster) and 5 [Yacht-Master 37s](/brands/rolex/yacht-master). The [2235](/calibers/rolex-2235) is the 48-hour movement it replaced, the [2232](/calibers/rolex-2232) its no-date sibling for the Oyster Perpetual, and the [3235](/calibers/rolex-3235) its counterpart in the 36 mm and 41 mm cases.

906 other watches in the library run the Rolex 2236.

Rolex

Lady-Datejust 28 Rolesor Everose Diamond / Oyster / MOP

279381RBR-0014 · 28 mm

Rolex

Lady-Datejust 28 Rolesor Rose Diamond / Jubilee / MOP

279381rbr-0013 · 28 mm

Rolex

Lady-Datejust 28 Rolesor Yellow Domed / Oyster / MOP

279163-0014 · 28 mm

Rolex

Datejust 31 Stainless Steel / Yellow Gold / Diamond / Black MOP / Oyster

278383RBR-0023 · 31 mm