Datejust 31 Stainless Steel / Yellow Gold / Domed - Diamond / Olive - Diamond / Jubilee

About This Watch

The Rolex Datejust 31, in its 278343RBR-0030 iteration, stands apart for its harmonious fusion of contrasting materials and a dial that commands quiet attention. The case, a blend of stainless steel and yellow gold, offers a refined duality—modern in its construction yet rooted in the enduring elegance of the Datejust collection, which has defined understated luxury since its introduction in 1945. At the heart of the watch lies a dial of deep, rich green, finished in a sunburst pattern that catches light with subtle gradation. Gem-set indexes add a touch of discreet opulence, their placement balanced by the simplicity of stick hands that emphasize legibility without intruding on the dial’s visual harmony. The domed sapphire crystal, paired with a closed case back, reinforces the watch’s robust yet sophisticated character, while the Jubilee bracelet ensures a secure, comfortable fit that has become a hallmark of the collection. Powering this timepiece is Rolex’s Caliber 2236, an automatic movement celebrated for its precision, reliability, and the inclusion of a date display through a Cyclops lens. The 31mm diameter, a more contemporary size within the Datejust lineage, suits those who seek a presence that is neither overwhelming nor diminutive. With water resistance to 100 meters, it balances practicality with the refined craftsmanship expected of a luxury watch. This watch is for the discerning individual who values heritage, subtlety, and the quiet confidence of a timepiece that speaks volumes without shouting. It is equally at home in a boardroom, on a weekend jaunt, or as a cherished heirloom passed through generations.

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.

278343RBR-0030 is one of 24 executions of the 278343RBR base reference. Underneath they are the same watch; what separates this one is a green sunburst dial and a yellow gold, stainless steel case.

Rolex

White · Yellow Gold, Stainless Steel

278343RBR-0001 · 31 mm

Rolex

White · Yellow Gold, Stainless Steel

278343RBR-0002 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

278343RBR-0003 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

278343RBR-0004 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

278343RBR-0013 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

278343RBR-0014 · 31 mm

Rolex

Green · Yellow Gold, Stainless Steel

278343RBR-0015 · 31 mm

Rolex

Green · Yellow Gold, Stainless Steel

278343RBR-0016 · 31 mm

+ 15 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