Datejust 31 Rolesor Yellow Fluted Diamond / Jubilee / MOP Roman

About This Watch

The Rolex Datejust 31, in its Rolesor Yellow Fluted Diamond iteration, embodies the quiet authority of a timepiece that has defined elegance since its introduction in 1945. This reference, distinguished by its 31mm case and the interplay of 18ct gold and stainless steel, marries the enduring appeal of the Datejust collection with a refined modernity. The dial, a luminous mother-of-pearl surface framed by gold fluted bezel, is adorned with Roman numerals and stick hands that exude a timeless precision. The Jubilee bracelet, with its five-link design, complements the watch’s balanced proportions, ensuring both comfort and a sense of quiet sophistication. At its core, the Datejust 31 is powered by Rolex’s in-house Caliber 2235, a self-winding movement certified for chronometric accuracy by the COSC. This mechanical heart, with its 48-hour power reserve and Parachrom blue spring, underscores the brand’s commitment to reliability and innovation without compromising the watch’s understated character. The sapphire crystal, paired with a closed case back, protects the intricate mechanics while emphasizing the watch’s robust construction. This timepiece is for the discerning individual who values heritage and subtlety, seeking a companion for both formal engagements and moments of quiet distinction. It is not a statement, but a testament to enduring craftsmanship—one that lingers in the memory long after the final glance at the dial.

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. 48 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.

178313-0002 is one of 31 executions of the 178313 base reference. Underneath they are the same watch; what separates this one is a white dial.

Rolex

Black · Yellow Gold, Stainless Steel

178313-0001 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178313-0006 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

178313-0013 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178313-0017 · 31 mm

Rolex

Black · Yellow Gold, Stainless Steel

178313-0021 · 31 mm

Rolex

Black

178313-0026 · 31 mm

Rolex

Silver · Yellow Gold, Stainless Steel

178313-0027 · 31 mm

Rolex

Champagne · Yellow Gold, Stainless Steel

178313-0028 · 31 mm

+ 22 more variants in this family.

The 2235 is the small Rolex automatic of the six-digit generation, a 20 mm movement with a date. It carried the Datejust 31 and the 26 mm Lady-Datejust from around 2000 until the 2236 replaced it. It powers 733 watches in this library. It has 31 jewels, a 48-hour reserve and a beat of 28,800 vph, and every one is a COSC chronometer. It is the same architecture as the [2236](/calibers/rolex-2236) that followed, without the silicon Syloxi hairspring and with seven hours less reserve; the [2236 piece](/blog/the-rolex-2236-the-most-common-movement-in-this-library) explains what changed. The library finds it almost entirely in the [Datejust 31](/brands/rolex/datejust-31): 682 references, the 1782xx generation, whose 45 base references and hundreds of dial variants make that collection the largest here. The 26 mm [Lady-Datejust](/brands/rolex/lady-datejust) of the 1791xx generation accounts for 29, the [Pearlmaster](/brands/rolex/pearlmaster) 29 mm and 34 mm for 19, and the 35 mm Yacht-Master for 3. A six-digit Datejust 31 reference is a 2235; the seven-digit one is a 2236, as the [reference-number guide](/blog/how-to-read-a-watch-reference-number) explains. The 2231 was its no-date sibling in the Oyster Perpetual, and the [3135](/calibers/rolex-3135) its counterpart in the 36 mm cases.

732 other watches in the library run the Rolex 2235.

Rolex

Datejust 31 Yellow Gold Diamond / Oyster / Black MOP

178158-0056 · 31 mm

Rolex

Datejust 31 Stainless Steel Diamond / Oyster / Pink MOP

178384-0061 · 31 mm

Rolex

Datejust 31 Rolesor Everose Domed / Jubilee / Black MOP

178241-0043 · 31 mm

Rolex

Datejust 31 Yellow Gold Domed / Oyster / Champagne Roman

178248-0079 · 31 mm