Rolex · Lady-Datejust

Strap for Lady-Datejust 28 Stainless Steel / Rose Gold / Diamond / Rose / Oyster

Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width14 mm
Case diameter28 mm
Reference279381RBR-0023 (aka: m279381rbr-0023)
FamilyLady-Datejust
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseRose Gold, Stainless Steel

Recommended spring bar

Spring bars Rolex Lady-Datejust 14mm — 1.5mm diameter

Technical match for lug width and diameter · lug 14 mm · Ø 1.5 mm

All Rolex spring barsOpen →

The Lady-Datejust 279381RBR-0023 (aka: m279381rbr-0023), seen from the bench

The Rolex Lady-Datejust 28 reference 279381RBR-0023 combines Oystersteel and 18K Everose gold with a diamond-set bezel and mother-of-pearl dial with diamond indices. Powered by the Rolex 2236 chronometer-certified caliber, it beats at 28,800 vph with a 55-hour power reserve and features a Syloxi silicon hairspring for magnetic resistance. The 28mm case is water-resistant to 100 meters, with a Cyclops date window at 3 o'clock. The lug width is precisely 14mm.

Frequently asked questions

What is the lug width of the Rolex Lady-Datejust 279381RBR-0023?

The lug width of the Rolex Lady-Datejust 279381RBR-0023 is 14mm. This measurement is specific to the current 28mm Lady-Datejust case and is essential for the correct fitting of any aftermarket strap. To verify it, place a digital calliper between the two lugs of the case: the reading must be exactly 14mm.

What is the best strap for the Rolex Lady-Datejust 279381RBR-0023?

Given the diamond-set bezel and mother-of-pearl dial of the 279381RBR-0023, a vegetable-tanned alligator strap is the most coherent choice from a sartorial standpoint. The reptile grain complements the brilliant-set texture without competing with it. Recommended shades: bordeaux, cognac or midnight blue, which enhance the warm reflections of the Everose Rolesor. For more active use, a vulcanised rubber strap maintains functionality without sacrificing aesthetics.

How do you change the strap on the Rolex Lady-Datejust 279381RBR-0023?

To replace the strap on the Lady-Datejust 279381RBR-0023, a fine-tipped spring bar tool is required. Insert the tip into the lateral slot of the lug, compress the spring bar's retaining spring and slide the strap outward. The operation requires care to avoid scratching the Oystersteel case. If in doubt, it is advisable to consult a watchmaker or the Casati Milano atelier at the time of purchase.

Are there aftermarket straps compatible with the Rolex Lady-Datejust 279381RBR-0023?

Yes, there are high-quality aftermarket straps compatible with the Lady-Datejust 279381RBR-0023. The essential parameter is a lug width of 14mm with minimal tolerance. Milano Straps produces alligator, box calf, shell cordovan, NATO and rubber straps specifically sized for a 14mm lug width, complete with spring bars and a buckle or deployant clasp in steel or rose gold.

How long does a leather strap for the Rolex Lady-Datejust 279381RBR-0023 last?

The lifespan of a leather strap for the 279381RBR-0023 depends on the material and maintenance. A quality vegetable-tanned alligator strap, regularly treated with a neutral colourless leather cream, can last between 3 and 5 years with daily wear. Box calf leather typically lasts 2–3 years. Shell cordovan, thanks to the density of the horse's shell fibres, is the most durable of the hand-crafted leathers. Casati Milano straps carry an 18-month guarantee against manufacturing defects.

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