Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / Chocolate - Diamond / Oyster

About This Watch

The Rolex Datejust 31 Reference 278341RBR-0027 stands apart through its refined interplay of materials and meticulous attention to detail, embodying the enduring elegance of the Datejust collection since its introduction in 1945. The case, a harmonious blend of stainless steel and rose gold, frames a dial of deep, rich chocolate brown, its sunburst finish catching light with subtle gradations that shift with the angle of view. Gem-set indexes add a quiet opulence, their presence understated yet deliberate, while stick hands provide clarity and precision. The domed sapphire crystal, paired with the Oyster case’s 100-meter water resistance, ensures both durability and a sense of timeless sophistication. At its core, the watch houses the Caliber 2236, a self-winding movement with a date display and a power reserve of approximately 48 hours, reflecting Rolex’s commitment to mechanical excellence. The 31mm diameter and 16mm lug width offer a balanced presence on the wrist, a size that bridges the gap between classic proportions and modern wearability. The closed case back, a hallmark of the Oyster design, reinforces the watch’s robustness without compromising its aesthetic restraint. This timepiece is for those who value discretion as

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.

278341RBR-0027 is one of 24 executions of the 278341RBR base reference. Underneath they are the same watch; what separates this one is a brown sunburst dial and a rose gold, stainless steel case.

Rolex

White · Rose Gold, Stainless Steel

278341RBR-0001 · 31 mm

Rolex

White · Rose Gold, Stainless Steel

278341RBR-0002 · 31 mm

Rolex

Brown · Rose Gold, Stainless Steel

278341RBR-0003 · 31 mm

Rolex

Brown · Rose Gold, Stainless Steel

278341RBR-0004 · 31 mm

Rolex

Rose · Rose Gold, Stainless Steel

278341RBR-0005 · 31 mm

Rolex

Rose · Rose Gold, Stainless Steel

278341RBR-0006 · 31 mm

Rolex

Rose · Rose Gold, Stainless Steel

278341RBR-0009 · 31 mm

Rolex

Rose · Rose Gold, Stainless Steel

278341RBR-0010 · 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