Datejust 31 Everose Domed / President / Black MOP

About This Watch

The Rolex Datejust 31, a timeless embodiment of the brand’s enduring legacy, finds a refined expression in the 178245f-0015, where craftsmanship meets understated elegance. This iteration marries the collection’s storied heritage—first introduced in 1945 as a symbol of accessible luxury—with contemporary sophistication. The black mother-of-pearl dial, framed by a domed 18k Everose gold case, exudes quiet opulence. Its gem-set indexes catch light with subtle precision, while the stick hands trace the dial’s surface with minimalist grace. The sapphire crystal, paired with a water resistance of 100 meters, ensures both durability and clarity, a testament to Rolex’s relentless pursuit of perfection. At its core lies the Caliber 2235, a self-winding movement certified for precision by the COSC, its balance wheel oscillating at 28,800 vibrations per hour. This mechanical heart, encased within the watch’s closed back, reflects Rolex’s mastery of horology, blending tradition with modern engineering. The President bracelet, a hallmark of the Datejust line, adds a layer of sophistication with its polished links and secure clasp, ensuring both comfort and a seamless union with the case. This watch is for those who value discretion as much as distinction—individuals who seek a timepiece that transcends trends, suitable for both formal occasions and the quiet confidence of everyday wear. It is not merely an object, but a statement of enduring taste.

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.

178245f-0015 is one of 17 executions of the 178245f base reference. Underneath they are the same watch; what separates this one is a black dial and a rose gold case.

Rolex

White · Rose Gold

178245f-0001 · 31 mm

Rolex

Pink · Rose Gold

178245f-0005 · 31 mm

Rolex

Silver · Rose Gold

178245f-0006 · 31 mm

Rolex

Pink · Rose Gold

178245f-0010 · 31 mm

Rolex

Silver · Rose Gold

178245f-0014 · 31 mm

Rolex

Silver · Rose Gold

178245f-0016 · 31 mm

Rolex

Pink · Rose Gold

178245f-0019 · 31 mm

Rolex

Brown · Rose Gold

178245f-0021 · 31 mm

+ 8 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