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

The Rolex Lady-Datejust 279139RBR-0013 features a lug width of 14mm. This is a non-standard measurement within the broader watch industry, making it essential to select straps specifically manufactured for this attachment width. A vernier calliper applied to the inner space between the two lugs will confirm the measurement with full precision.

For an 18-carat white gold case with a diamond-set bezel, the most coherent materials are vegetable-tanned alligator — featuring a regular belly scale grain — and hand-burnished smooth calf leather. Shell cordovan is a distinguished option for those who appreciate a rich patina developing over time. All straps must carry a 14mm attachment to ensure correct fitment within the original Rolex lugs.

Strap replacement requires a spring bar tool inserted into the small hole located on the inner side of each lug. Compressing the spring bars releases the strap without applying pressure to the case. It is advisable to work on a soft surface and, for a first intervention on a white gold case, to consult a watchmaker or the Casati Milano atelier to avoid scratching the polished surfaces.

Yes. Milano Straps offers a curated selection of aftermarket straps with a 14mm attachment designed specifically for the Lady-Datejust: the ends are shaped to match the curved Oyster lug profile, ensuring precise fitment and visual coherence with the original case. Available materials range from alligator and calf leather to vulcanised rubber for more active use.

Longevity depends on leather quality, frequency of wear, and exposure to moisture and perspiration. A high-quality vegetable-tanned alligator strap, worn with care and stored correctly, maintains its structural and aesthetic integrity for 3 to 5 years. Casati Milano straps carry an 18-month warranty against manufacturing defects. Avoiding prolonged contact with water and perfumes significantly extends the strap's service life.