Rolex · Datejust 31

Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / Rose - Diamond / Jubilee

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter31 mm
Reference278341rbr-0024
FamilyDatejust 31
MovementRolex caliber 2236 hours, minutes, seconds | date | chronometer
Year2018
CaseRose Gold, Stainless Steel

Spring bar

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Straps for the Datejust 31 278341rbr-0024

Selected for the 16 mm lug width

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The Datejust 31 278341rbr-0024, seen from the bench

The Rolex Datejust 31 reference 278341rbr-0024 is a timepiece combining Rolesor Everose (904L stainless steel and 18-karat rose gold) with a diamond-set bezel. The 31mm case houses the Rolex caliber 2236, a COSC-certified chronometer movement with a silicon Syloxi balance wheel and rapid date correction, offering ±2 seconds daily precision. The watch features a sapphire crystal with anti-reflective coating and is water-resistant to 100 meters. The lug width is 16mm, requiring careful aftermarket strap selection due to its less common dimensions compared to standard 20mm or 18mm sizes.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 278341rbr-0024?

The lug width of the Rolex Datejust 31 reference 278341rbr-0024 is 16mm. This measurement should be taken with a digital calliper at the internal distance between the two lugs where the strap fits. It is a specification shared across the entire Datejust 31 family and determines compatibility with aftermarket straps.

What is the best strap for the Rolex Datejust 31 278341rbr-0024?

For the Datejust 31 in Rolesor Everose, an alligator strap with vegetable tanning is the most coherent choice for the haute joaillerie character of this reference. Smooth box calf leather suits everyday wear with greater discretion, while shell cordovan develops a natural patina of exceptional quality. A deployant clasp in rose gold completes the pairing with stylistic rigour.

How do you change the strap on a Rolex Datejust 31?

The Datejust 31 strap is secured by 16mm spring bars. Replacement requires a fine-tipped spring bar tool to compress the bars and release the strap. The operation does not demand advanced watchmaking skills, but it is advisable to entrust the task to a professional to avoid scratching the rose gold lugs.

Are there aftermarket straps compatible with the Rolex Datejust 31 278341rbr-0024?

Yes, milanostraps.it offers a curated selection of aftermarket straps built to a 16mm lug width, compatible with the Datejust 31. Available in alligator, calf leather, shell cordovan and vulcanised rubber, with buckle or deployant clasp options. Each strap is handcrafted and can be customised to order through the Casati Milano atelier.

How long does a leather strap last on a Rolex Datejust 31?

The lifespan of a leather strap depends on the quality of the hide, tanning method and daily use. An alligator or shell cordovan strap with vegetable tanning, properly cared for and kept away from prolonged water and perspiration exposure, can last between 3 and 7 years while developing a distinguished patina. Calf leather straps generally have a shorter lifespan, averaging 1 to 3 years under regular use.

The next step

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Casati Milano · Via XX Settembre 15, Milan · by appointment only