Rolex · Lady-Datejust

Strap for Lady-Datejust 28 Yellow Gold Diamond / Jubilee / Lavender Diamond

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-0028
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-0028, seen from the bench

The Lady-Datejust represents the feminine version of the Rolex Datejust collection. It features the automatic caliber 2236 with hour, minute, second and date functions, certified chronometer. The case has 14mm lugs.

Frequently asked questions

What is the lug width of the Rolex Lady-Datejust 279138rbr-0028?

The Rolex Lady-Datejust 279138rbr-0028 features a lug width of 14 mm. This measurement is taken at the inner seat of the lug with a digital calliper, with the case free of any strap or bracelet. This is a specific dimension that requires dedicated straps: standard 16 mm or 18 mm formats are not compatible with this reference.

What is the best strap for the Rolex Lady-Datejust 279138rbr-0028?

For a Lady-Datejust 279138rbr-0028 in yellow gold with a ruby-set bezel, vegetable-tanned alligator leather is the benchmark choice: the square-scale texture complements the bezel without overpowering it. Shell cordovan develops a distinctive patina over time, while smooth polished calf leather offers a more understated alternative. For daily or active use, vulcanised rubber preserves the Oyster waterproofing of the model.

How do you change the strap on the Rolex Lady-Datejust 279138rbr-0028?

To replace the strap on the Lady-Datejust 279138rbr-0028, a fine-tipped springbar tool is required to remove the springbars from the 14 mm lugs. The operation demands precision to avoid scratching the yellow gold case: it is advisable to rest the case on a soft cloth and work in good lighting. Alternatively, Casati Milano atelier carries out strap changes in-house by appointment.

Are there aftermarket straps compatible with the Rolex Lady-Datejust 279138rbr-0028?

Yes. The 14 mm lug format of the Lady-Datejust 279138rbr-0028 is served by a specific selection of high-quality aftermarket straps. milanostraps.it offers models in alligator, calf leather, shell cordovan and rubber, handcrafted with a 14 mm attachment calibrated for original Rolex lugs. Both pin buckle and deployant clasp options are available in yellow gold to match the case material.

How long does a leather strap last on a Rolex Lady-Datejust 279138rbr-0028?

The lifespan of a leather strap depends on the quality of the hide, the tanning method and daily use. A high-grade vegetable-tanned alligator strap, properly maintained and rotated with other straps, retains its structural and aesthetic integrity for 3 to 5 years. Contact with water, perfume and perspiration accelerates deterioration: for the yellow gold Lady-Datejust, leather straps should be avoided in aquatic contexts, with vulcanised rubber preferred instead. Casati Milano offers 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