Datejust 31 Stainless Steel Domed Diamond / Jubilee / Rhodium - Roman

About This Watch

The Rolex Datejust 31, in its 178344-0010 iteration, embodies the quiet authority of a timepiece that has defined elegance for generations. Its case, a harmonious blend of stainless steel and white gold, is both a nod to the collection’s enduring legacy and a modern refinement of its classic proportions. The domed diamond-set bezel adds a subtle yet deliberate contrast to the dial’s grey hue, a color that balances restraint with depth, while the rhodium finish of the Roman numerals and stick hands ensures legibility without ostentation. This particular reference retains the Datejust’s signature Jubilee bracelet, a design first introduced in 1945 that remains one of the most comfortable and enduring wristwatch constructions in horology. At its heart lies the Caliber 2235, an automatic movement certified as a chronometer, offering precision and reliability through its 288 components and 48-hour power reserve. The sapphire crystal, paired with a closed case back, underscores the watch’s commitment to durability and discretion. The 31mm diameter, a deliberate choice for those who value proportion over grandeur, ensures the Datejust 31 sits comfortably on the wrist without sacrificing the presence of a luxury watch. This timepiece is for the individual who values heritage as much as craftsmanship, seeking a watch that is as functional in a boardroom as it is refined at a gala. It is not a statement, but a silent testament to the quiet confidence of its wearer.

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.

178344-0010 is one of 51 executions of the 178344 base reference. Underneath they are the same watch; what separates this one is a grey dial and a white gold, stainless steel case.

Rolex

Brown · White Gold, Stainless Steel

178344-0001 · 31 mm

Rolex

Purple · White Gold, Stainless Steel

178344-0002 · 31 mm

Rolex

Grey · White Gold, Stainless Steel

178344-0003 · 31 mm

Rolex

White

178344-0004 · 31 mm

Rolex

White · White Gold, Stainless Steel

178344-0005 · 31 mm

Rolex

White

178344-0006 · 31 mm

Rolex

White

178344-0007 · 31 mm

Rolex

Black

178344-0008 · 31 mm

+ 42 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