Strap for Lady-Datejust 28 Stainless Steel / Diamond / Grey - Diamond / Oyster

The Rolex Lady-Datejust 279384rbr-0018 features a 28 mm Oyster case with a lug width of 14 mm. This measurement is taken using a digital calliper positioned between the two lugs directly against the case, not at the outer edge of the lugs. Any aftermarket strap for this reference must have a 14 mm attachment end to ensure a precise fit without putting stress on the lugs.

For the Lady-Datejust 279384rbr-0018 in white gold with a diamond-set bezel, a vegetable-tanned Mississippi alligator strap is the most technically coherent choice: the regular scale grain complements the geometry of the Oyster case and develops a noble patina over time. Polished box-calf leather is a more understated alternative, whilst shell cordovan offers maximum durability for daily wear. The lug width is 14 mm.

Changing the strap on the Lady-Datejust 279384rbr-0018 requires a dedicated spring bar tool or a thin lever to compress the 14 mm spring bars that secure the strap to the Oyster case lugs. Insert the tool into the lateral notch of the lug, compress the spring bar and slide the strap outward. The operation is fully reversible and does not require a visit to an authorised service centre, provided the correct tools are used to avoid scratching the white gold case.

Yes. The aftermarket for the Lady-Datejust 279384rbr-0018 offers 14 mm straps in a variety of materials — alligator, calf leather, shell cordovan, nylon NATO, vulcanised rubber — crafted by artisan workshops such as Casati Milano. Compatibility is determined solely by the 14 mm lug width and the overall strap length, which should be proportioned to the 28 mm case diameter for a visually balanced result. Fitting a deployant clasp requires prior verification of the lug-to-lug distance.

The lifespan of a 14 mm leather strap on a Lady-Datejust depends on the leather type, frequency of use and maintenance. A vegetable-tanned alligator strap, when rotated with other straps and kept away from prolonged perspiration and water, can last between 3 and 7 years whilst retaining its structure. Box-calf leather has an average lifespan of 2 to 4 years with daily use. Shell cordovan is the most abrasion-resistant option and can exceed 5 years. The Casati Milano warranty covers manufacturing defects for 18 months.