Datejust 31 Stainless Steel Domed Diamond / Jubilee / Grey - Diamond

About This Watch

The Datejust 31, a cornerstone of Rolex’s enduring legacy, finds a refined expression in this 2020 iteration, where tradition meets contemporary sophistication. The grey dial, finished with a sunburst pattern, exudes quiet authority, its subtle depth complemented by gem-set indexes that catch light with restrained elegance. Encased in stainless steel with a white gold bezel adorned with diamonds, the watch balances the robustness of its materials with a touch of opulence, a hallmark of the collection’s ability to adapt without sacrificing identity. The domed crystal and Jubilee bracelet, both hallmarks of Rolex’s design philosophy, frame the dial with a sense of proportion and timelessness, ensuring the piece feels as much at home in a boardroom as it does on the wrist of a seasoned collector. At its heart lies the Caliber 2236, a self-winding movement that underscores Rolex’s mastery of precision engineering. Its reliability and craftsmanship, honed over decades, are evident in every detail, from the smoothness of its operation to the accuracy of its timekeeping. This watch is for those who value understated distinction—a piece meant to be worn with confidence, its presence speaking volumes without demanding attention. It suits occasions that demand both formality and discretion, serving 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.

278344RBR-0008 is one of 34 executions of the 278344RBR base reference. Underneath they are the same watch; what separates this one is a grey sunburst dial and a white gold, stainless steel case. Introduced in 2020.

Rolex

Black · White Gold, Stainless Steel

278344RBR-0001 · 31 mm

Rolex

Black · White Gold, Stainless Steel

278344RBR-0002 · 31 mm

Rolex

White

278344RBR-0005 · 31 mm

Rolex

White

278344RBR-0006 · 31 mm

Rolex

Grey · White Gold, Stainless Steel

278344RBR-0007 · 31 mm

Rolex

White · White Gold, Stainless Steel

278344RBR-0011 · 31 mm

Rolex

White · White Gold, Stainless Steel

278344RBR-0012 · 31 mm

Rolex

Silver · White Gold, Stainless Steel

278344RBR-0013 · 31 mm

+ 25 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