Rolex · Datejust 31

Strap for Datejust 31 Stainless Steel Domed Diamond / Jubilee / Green

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
Reference278344rbr-0020
FamilyDatejust 31
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseWhite Gold, Stainless Steel

Spring bar

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

Straps for the Datejust 31 278344rbr-0020

Selected for the 16 mm lug width

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The Datejust 31 278344rbr-0020, seen from the bench

The Datejust 31 represents the 31mm version of the Rolex Datejust collection, equipped with the COSC-certified automatic caliber 2236. The watch offers indication of hours, minutes, seconds and date, with 16mm lugs. The 278344rbr-0020 reference identifies a specific materials and dial configuration within the range.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 ref. 278344rbr-0020?

The lug width is 16 millimetres. This dimension is specific to the 31mm Datejust models designed for the female wrist and represents the interior distance between the lugs' edges. Always verify the lug width before purchasing an aftermarket strap to ensure correct installation.

Which strap would you recommend for the Datejust 31 278344rbr-0020?

Nile crocodile is the absolute choice of excellence for this model, thanks to its fine and regular grain that enhances elegance without affectation. Alternatively, full-grain calf leather offers softness and versatility, whilst vegetable tanning guarantees a patina that ages gracefully. For sportier interpretations, FKM rubber straps maintain the case's formal proportions.

How do I change the strap on my Rolex Datejust 31 278344rbr-0020?

The Rolex Datejust 31 uses telescopic pins that connect the strap to the case. To remove the strap: position the watch on a soft surface, use a strap tool or specific pressure device to gently push the pins outward, then slide the strap away. Installation follows the reverse procedure. We recommend entrusting this operation to a professional to avoid damaging the case.

Which aftermarket strap is compatible with ref. 278344rbr-0020?

Any strap with a 16-millimetre lug width is compatible with this Rolex. Milano Straps offers an exclusive collection of handcrafted straps in crocodile, calf and vegetable-tanned leather specifically designed for this dimension, available online and customisable at the Casati Milano atelier by appointment.

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

The lifespan of a leather strap depends on usage and care. A quality crocodile strap, worn daily, has an average durability of 3-5 years before requiring replacement. Vegetable-tanned leather, more robust, can last 5-7 years whilst developing a natural patina. Milano Straps provides an 18-month warranty on manufacturing defects and offers reconditioning services to extend the strap's life.

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