Rolex · Lady-Datejust
Strap for Rolex Lady-Datejust 279138RBR
Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Lady-Datejust 279138RBR, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Lady-Datejust 279138RBR?
The Rolex Lady-Datejust 279138RBR has a lug width of 14mm. This measurement is taken with a digital calliper across the inner gap between the two lugs at the strap attachment point, and determines compatibility with any aftermarket strap.
What is the best strap for the Rolex Lady-Datejust 279138RBR?
For the 279138RBR in yellow gold with a diamond-set bezel, a lacquered alligator strap — in bordeaux, cognac or black — provides the best formal coherence. Vegetable-tanned calf leather is ideal for everyday wear, developing an authentic patina over time. Shell cordovan offers a distinguished alternative without requiring lacquering.
How do you change the strap on the Rolex Lady-Datejust 279138RBR?
To remove the original bracelet or strap, use a springbar tool suited to 14mm lugs. The springbars are released by pressing their ends within the dedicated lug slots. Work on a soft surface to avoid scratching the case. If in doubt, consult a watchmaker or the Casati Milano atelier.
Are there aftermarket straps compatible with the Rolex Lady-Datejust 279138RBR?
Yes. Any strap with a 14mm attachment width is compatible with the Lady-Datejust 279138RBR. It is also important to check the overall length: for female wrists, a 95/75mm combination is generally recommended. Milanostraps.it offers a curated selection of 14mm straps in various materials and colours, with either a pin buckle or deployant clasp.
How long does a leather strap last on a Rolex Lady-Datejust 279138RBR?
Longevity depends on the material and care. A quality alligator strap, with regular use, can last between two and five years. Vegetable-tanned calf leather absorbs moisture more readily and requires periodic conditioning with a leather cream. Avoiding prolonged contact with water and perspiration significantly extends strap life. 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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

