Rolex · Datejust 31

Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / Aubergine - Roman / Oyster

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-0019
FamilyDatejust 31
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseRose Gold, Stainless Steel

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Straps for the Datejust 31 278341rbr-0019

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The Datejust 31 278341rbr-0019, seen from the bench

The Rolex Datejust 31 ref. 278341rbr-0019 combines 75 years of watchmaking heritage in a 31mm Rolesor Everose case. Introduced in 1945 as the first wristwatch with a date window at 3 o'clock, the Datejust features a midsize design blending 18-carat Everose gold and Oystersteel, offering balanced proportions for daily wear. The diamond-set bezel and mother-of-pearl dial elevate this model to haute joaillerie status. Water-resistant to 100 meters with a Twinlock screw-down crown, the watch houses the Rolex caliber 2236 movement with a silicon Syloxi balance wheel, delivering approximately 55 hours of power reserve and ±2 seconds/day precision. The lug width is 16mm.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 278341rbr-0019?

The Rolex Datejust 31 ref. 278341rbr-0019 has a lug width of 16mm. This is the standard measurement for the entire Datejust 31 family, distinct from the 36mm version (20mm) and the Lady-Datejust 28mm (13mm). To verify the measurement, use a digital calliper positioned between the two lugs close to the case.

What is the best strap for the Rolex Datejust 31 278341rbr-0019?

For the Datejust 31 in Rolesor Everose, an alligator strap with vegetable tanning is the most coherent choice: the belly grain complements the polished case finish and diamond-set details. Shell cordovan is the alternative for those seeking a developing patina over time. For daily or sport use, vulcanised rubber in rosé maintains chromatic coherence with the Everose gold.

How do you change the strap on a Rolex Datejust 31 278341rbr-0019?

The strap on the Datejust 31 is removed using a springbar tool, inserting the tip into the slot between the strap and the lug to compress the springbars. The operation takes approximately two minutes and does not require professional equipment, though it is advisable to work on a soft surface to avoid scratching the Rolesor Everose case.

Are there aftermarket straps compatible with the Rolex Datejust 31 278341rbr-0019?

Yes. Any strap with a 16mm attachment width is compatible with the Datejust 31 ref. 278341rbr-0019. Milano Straps handcrafted straps are produced with shaped ends to ensure a perfect fit against the curved lugs of the Datejust, with no gaps or visible spacing. The full selection is available at milanostraps.it in the 16mm strap category.

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

Longevity depends on the material and usage. An alligator strap with vegetable tanning, properly kept away from water and perspiration, lasts between 3 and 5 years with daily wear. Shell cordovan, being denser and more compact, can exceed 5 years while developing a patina that enhances its appearance. Milano Straps guarantees all its straps for 18 months against manufacturing defects.

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