Rolex · Lady-Datejust
Strap for Lady-Datejust 28 Yellow Gold Fluted / President / Paved Roman
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 279178-0031, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Lady-Datejust 279178-0031?
The lug width of the Rolex Lady-Datejust 279178-0031 is 14mm. This measurement refers to the internal distance between the lugs on the 6 o'clock side of the case and is the key parameter for selecting a compatible strap. Verifying this with a ruler before purchase prevents fitting issues with the spring bars.
What is the best strap for the Rolex Lady-Datejust 279178-0031 in yellow gold?
For a yellow gold 18-carat case such as that of the Lady-Datejust 279178-0031, an alligator strap in vegetable-tanned leather is the most coherent choice both aesthetically and materially. The belly grain develops a patina that harmonises with the warmth of yellow gold. Alternatively, box-calf leather and shell cordovan offer more compact surfaces for a contemporary formal register. A deployant clasp in gold or gold-tone completes the pairing without interrupting the visual continuity of the case.
How do you change the strap on a Rolex Lady-Datejust 279178-0031?
To replace the strap on the Lady-Datejust 279178-0031, the spring bars securing the bracelet or strap to the 14mm lugs must be removed. A fine-tipped springbar tool is inserted into the lug hole or into the gap between the strap and the case. The spring bar is compressed on both sides and extracted. On a yellow gold watch, tools with plastic tips are recommended to avoid scratching the polished surfaces. The operation can also be carried out by a watchmaker or through the bespoke service at Casati Milano.
Are there aftermarket straps compatible with the Rolex Lady-Datejust 279178-0031?
Yes, numerous aftermarket straps are compatible with the Rolex Lady-Datejust 279178-0031, provided they feature lug ends precisely calibrated to 14mm. milanostraps.it offers a selection of handcrafted leather, rubber and NATO straps specifically produced for this width. The quality of the lug end finishing is critical: a poorly shaped end will not fit into 14mm lugs without forcing, risking damage to the gold case.
How long does a leather strap last on a Rolex Lady-Datejust?
The lifespan of a leather strap on a Rolex Lady-Datejust depends on the type of leather, the tanning process and daily use. A quality vegetable-tanned alligator strap, with regular but non-sporting use, typically lasts between 3 and 5 years before showing visible signs of wear on the reverse side. Calf leather tends to deteriorate more quickly when exposed to perspiration. Keeping the strap dry, avoiding prolonged contact with perfumes and creams, and alternating it with a second strap will significantly extend its service life. Casati Milano straps include 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

