Datejust 31 Stainless Steel Fluted / Jubilee / Blue

About This Watch

The Rolex Datejust 31, in its 178274-0037 iteration, embodies the quiet authority of a timepiece that has defined elegance since its introduction in 1945. This reference distinguishes itself through a harmonious interplay of materials: a 31mm case blending polished stainless steel with 18ct white gold, its fluted bezel a nod to the enduring design language of the Datejust collection. The dial, a deep, rich blue, evokes the serenity of the ocean at twilight, its stick indexes and hands executed with precision to ensure legibility without ostentation. The sapphire crystal, paired with a closed case back, underscores the watch’s commitment to both durability and discretion, while the Jubilee bracelet—its five-link design a hallmark of Rolex’s craftsmanship—offers a balance of comfort and refinement. At the heart of the watch lies the Caliber 2235, an automatic movement celebrated for its reliability and precision. Featuring a Parachrom balance spring and a 70-hour power reserve, it reflects Rolex’s relentless pursuit of technical excellence. The 100-meter water resistance, though not a feature typically emphasized, speaks to the watch’s practicality without compromising its sartorial grace. This timepiece is for the individual who values understated sophistication, whose presence is marked not by excess but by the quiet confidence of a legacy. It suits the boardroom, the gala, or the quiet moments between them—worn as a testament to heritage, craftsmanship, and the enduring allure of a watch that needs no introduction.

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.

178274-0037 is one of 52 executions of the 178274 base reference. Underneath they are the same watch; what separates this one is a blue dial and a white gold, stainless steel case.

Rolex

Black · White Gold, Stainless Steel

178274-0004 · 31 mm

Rolex

Black · White Gold, Stainless Steel

178274-0005 · 31 mm

Rolex

White · White Gold, Stainless Steel

178274-0008 · 31 mm

Rolex

Silver · White Gold, Stainless Steel

178274-0009 · 31 mm

Rolex

Pink · White Gold, Stainless Steel

178274-0012 · 31 mm

Rolex

Black · White Gold, Stainless Steel

178274-0014 · 31 mm

Rolex

Grey

178274-0016 · 31 mm

Rolex

Silver · White Gold, Stainless Steel

178274-0017 · 31 mm

+ 43 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