Datejust 31 Stainless Steel / Yellow Gold / Diamond / MOP / Jubilee

About This Watch

The Rolex Datejust 31, in its 278383RBR-0028 iteration, embodies the enduring elegance of a collection that has defined luxury watchmaking since its introduction in 1945. This reference marries the timeless appeal of the Datejust’s clean, symmetrical design with a striking interplay of materials: a 31mm stainless steel case set with 18ct yellow gold, accented by a row of diamonds along the bezel. The dial, a luminous white mother-of-pearl surface, is framed by gem-set indexes that catch light with quiet precision, while the stick hands add a sense of understated clarity. The Jubilee bracelet, with its five-link design, ensures both comfort and a signature sense of refinement. At the heart of the watch lies the Caliber 2236, a self-winding movement with a 55-hour power reserve, its precision and reliability a testament to Rolex’s mastery of in-house engineering. The sapphire crystal, paired with a closed case back, protects the mechanical artistry within, while the 100-meter water resistance underscores the watch’s practicality without compromising its aesthetic purity. The Datejust 31’s heritage as a symbol of discreet sophistication is evident in every detail, from the subtle lugs to the engraved crown. This timepiece is for those who value heritage as much as innovation, seeking a watch that balances heritage with contemporary craftsmanship. It suits formal occasions with its polished restraint, yet carries the quiet authority of a piece designed to endure across 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.

278383RBR-0028 is one of 24 executions of the 278383RBR base reference. Underneath they are the same watch; what separates this one is a white gloss dial.

Rolex

White · Yellow Gold, Stainless Steel

278383RBR-0001 · 31 mm

Rolex

White · Yellow Gold, Stainless Steel

278383RBR-0002 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

278383RBR-0003 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

278383RBR-0004 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

278383RBR-0013 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

278383RBR-0014 · 31 mm

Rolex

Green · Yellow Gold, Stainless Steel

278383RBR-0015 · 31 mm

Rolex

Green · Yellow Gold, Stainless Steel

278383RBR-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