Rolex · Datejust 31

Strap for Datejust 31 Rose Gold / Fluted / Rose - Roman / President

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
Reference278275-0035
FamilyDatejust 31
MovementRolex caliber 2236 hours, minutes, seconds | date | chronometer
Year2019
CaseRose Gold

Spring bar

Spring bars for Rolex

The right category for this model · choose the 16 mm size

Straps for the Datejust 31 278275-0035

Selected for the 16 mm lug width

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The Datejust 31 278275-0035, seen from the bench

The Rolex Datejust 31 Rose Gold ref. 278275-0035 is a 31mm case watch in Everose gold with a fluted bezel and Roman dial. It houses the Rolex Caliber 2236, a COSC-certified chronometer movement further refined to Rolex internal standards, delivering ±2 seconds per day accuracy. The Syloxi silicon balance spring provides resistance to magnetic fields and temperature variations. The Oyster case is water-resistant to 100 meters with a screw-down crown. Lug width is 16mm, a critical measurement for compatible aftermarket straps.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 reference 278275-0035?

The lug width of the Rolex Datejust 31 ref. 278275-0035 is 16mm. This measurement is taken with a digital calliper positioned between the two lugs at the strap attachment point. It is the essential parameter for selecting any compatible aftermarket strap.

What is the best strap for the Rolex Datejust 31 278275-0035 in Everose gold?

For an Everose gold case measuring 31mm, an alligator strap with vegetable tanning in bordeaux, cognac or midnight blue is the most aesthetically coherent choice. Shell cordovan is the alternative for those preferring a more compact grain. For daily or sport use, anatomical vulcanised rubber offers the most functional solution without compromising the elegant register of the piece.

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

Changing the strap on the Rolex Datejust 31 requires a springbar tool to remove the spring bars securing the strap to the lugs. It is advisable to work on a soft surface to avoid scratching the Everose gold case. Those unfamiliar with handling high-value timepieces should entrust the task to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Rolex Datejust 31 278275-0035?

Yes. Any strap with a 16mm attachment and standard spring bars is technically compatible with the Rolex Datejust 31 ref. 278275-0035. Milano Straps offers a curated selection of handcrafted 16mm straps in alligator, calf leather, shell cordovan, rubber and NATO, all specifically sized for this lug width.

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

The lifespan of a leather strap depends on the material, tanning method and daily use. A quality vegetable-tanned alligator strap, used carefully and rotated with other straps, can last between 3 and 7 years while retaining a distinguished appearance. Avoiding prolonged contact with water and perspiration is the primary precaution to preserve its structural integrity and patina.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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