Datejust 31 Stainless Steel / Diamond / Blue - Floral / Oyster

About This Watch

The 278384RBR-0039 Datejust 31 embodies a quiet mastery of proportion and materiality, distilling Rolex’s enduring ethos into a timepiece that feels both timeless and distinctly modern. Introduced in 2022, it marries the robustness of a 31mm stainless steel case with the refined warmth of white gold, its bezel set with diamonds that catch light without overwhelming the eye. The dial—a deep, even blue—serves as a canvas for the watch’s minimalist architecture, its absence of indexes and stick hands emphasizing a deliberate, almost architectural simplicity. The sapphire crystal, paired with a closed case back, ensures the watch’s integrity remains unbroken, while the Oyster case’s 100-meter water resistance underscores its practicality without compromising elegance. At its heart lies the self-winding Caliber 2236, a movement that exemplifies Rolex’s commitment to in-house engineering. With a balance wheel oscillating at 28,800 vibrations per hour and a power reserve of approximately 55 hours, it offers precision and reliability that have long defined the brand. The Datejust collection, first launched in 1945, has always balanced tradition with innovation; this iteration honors that legacy while subtly reimagining its visual language for the contemporary collector. This watch suits the discerning individual who values understated sophistication—a piece for those who seek a companion to their most important moments, whether in boardrooms, at soirées, or simply on the wrist during quiet contemplation. Its presence is never ostentatious, yet its craftsmanship is unmistakable.

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.

278384RBR-0039 is one of 34 executions of the 278384RBR base reference. Underneath they are the same watch; what separates this one is a blue dial and a white gold, stainless steel case. Introduced in 2022.

Rolex

Black · White Gold, Stainless Steel

278384RBR-0001 · 31 mm

Rolex

Black · White Gold, Stainless Steel

278384RBR-0002 · 31 mm

Rolex

White

278384RBR-0007 · 31 mm

Rolex

White

278384RBR-0008 · 31 mm

Rolex

Grey · White Gold, Stainless Steel

278384RBR-0009 · 31 mm

Rolex

Grey · White Gold, Stainless Steel

278384RBR-0010 · 31 mm

Rolex

White · White Gold, Stainless Steel

278384RBR-0013 · 31 mm

Rolex

White · White Gold, Stainless Steel

278384RBR-0014 · 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