Datejust 31 Yellow Gold / Fluted / MOP / President

About This Watch

The Rolex Datejust 31, in its 278278-0010 iteration, embodies the enduring elegance of the collection’s legacy, first introduced in 1945 as a timepiece that harmonized precision with timeless design. This particular reference distinguishes itself through a 31-millimeter yellow gold case, its fluted bezel a signature nod to Rolex’s architectural refinement, and a dial that marries sophistication with subtlety. The white mother-of-pearl surface, polished to a luminous gloss, is adorned with gem-set indexes that catch light with quiet brilliance, while stick hands trace the hour with minimalism. Encased in a sapphire crystal and sealed with a closed caseback, the watch balances durability with discretion, its 100-meter water resistance a testament to its practicality without compromising its role as a symbol of status. At its heart lies the Caliber 2236, a self-winding movement that delivers the precision and reliability for which Rolex is renowned. Its date display, positioned at the traditional 3 o’clock location, is a small but deliberate detail that underscores the collection’s commitment to functional elegance. The President bracelet, with its polished gold links and hidden clasp, ensures a secure yet unobtrusive fit, reinforcing

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.

278278-0010 is one of 28 executions of the 278278 base reference. Underneath they are the same watch; what separates this one is a white gloss dial and a yellow gold case.

Rolex

Green · Yellow Gold

278278-0003 · 31 mm

Rolex

Green · Yellow Gold

278278-0004 · 31 mm

Rolex

Champagne · Yellow Gold

278278-0009 · 31 mm

Rolex

Green · Yellow Gold

278278-0011 · 31 mm

Rolex

Champagne · Yellow Gold

278278-0016 · 31 mm

Rolex

White · Yellow Gold

278278-0017 · 31 mm

Rolex

Green · Yellow Gold

278278-0018 · 31 mm

Rolex

White · Yellow Gold

278278-0019 · 31 mm

+ 19 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