Rolex · Lady-Datejust

Strap for Lady-Datejust 28 Yellow Gold Diamond / President / White Roman

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
Reference279138rbr-0031
FamilyLady-Datejust
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseYellow Gold

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 279138rbr-0031, seen from the bench

The Lady-Datejust represents the feminine version of the classic Rolex Datejust, originally introduced in the 1950s. It is powered by the self-winding caliber 2236 movement with chronometer certification and date indication. The case features 14mm lugs, sized for the female wrist.

Frequently asked questions

What is the lug width of the Rolex Lady-Datejust 279138rbr-0031?

The Rolex Lady-Datejust 279138rbr-0031 features a 28mm case with a lug width of 14mm. This measurement refers to the internal distance between the two case lugs and determines the strap width at the top end, where it attaches directly to the case.

What is the best strap for the Rolex Lady-Datejust 279138rbr-0031 in yellow gold?

For the Lady-Datejust 279138rbr-0031 in yellow gold, an alligator strap in vegetable-tanned leather in cognac, bordeaux or honey tones offers the most coherent pairing with the character of this timepiece. Box-calf leather and shell cordovan are strong alternatives for everyday wear. In all cases, the strap attachment width must be 14mm.

How do you change the strap on a Rolex Lady-Datejust 279138rbr-0031?

The strap on the Lady-Datejust 279138rbr-0031 is secured to the case via 14mm spring bars. To replace it, use a spring bar tool with a hooked tip: compress the spring bar ends, slide the strap out of the lugs, then fit the new strap ensuring the spring bar clicks securely into both sides. If you are unfamiliar with the process, it is advisable to have it done by a watchmaker to avoid scratching the gold case.

Are there aftermarket straps compatible with the Rolex Lady-Datejust 279138rbr-0031?

Yes. Any strap with a 14mm attachment width is compatible with the Lady-Datejust 279138rbr-0031, provided it uses standard spring bars. Milano Straps and the Casati Milano atelier produce handcrafted straps specifically sized for this lug width, available in alligator, calf leather, shell cordovan, NATO and rubber, with pin buckle or deployant clasp.

How long does a leather strap last on a Rolex Lady-Datejust 279138rbr-0031?

Longevity depends on leather quality, frequency of wear and maintenance. A high-quality vegetable-tanned alligator strap, worn in rotation and stored away from moisture and direct light, can last between 3 and 7 years while retaining a distinguished appearance. Cordovan and box-calf leathers offer comparable durability. Exposure to perspiration, water and perfume accelerates deterioration: it is recommended to remove leather straps before physical activity or prolonged water contact.

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