Strap for Datejust 31 Rose Gold - Fluted / Silver - Floral / President

The Rolex Datejust 31 reference 278275-0045 has a lug width of 16mm. This measurement is standard across all Datejust 31 variants regardless of case material or finish. For a proper fit, a strap with curved ends designed to match Rolex's lug geometry is strongly recommended.

For an Everose gold case, straps in polished alligator in tobacco, bordeaux or dark brown tones offer the most coherent pairing within haute horlogerie tradition. Shell cordovan in burgundy or naturally tanned calfskin are strong alternatives for a more compact texture or an evolving patina. All straps must have a 16mm attachment width.

Strap replacement requires a spring bar tool to release the spring bars securing the strap to the lugs. It is advisable to work on a soft surface to avoid scratching the Everose gold case. The operation can also be performed by a watchmaker or at the Casati Milano atelier during a bespoke appointment.

Yes. Aftermarket straps with a 16mm attachment width and curved ends are fully compatible with the Datejust 31. Milano Straps offers a curated selection of handcrafted straps in various materials — alligator, shell cordovan, calfskin, NATO, rubber — each made to fit the lug geometry of this reference with millimetre precision.

Longevity depends on leather type and daily use. A quality alligator strap, properly maintained — rotated with other straps and kept away from water and excessive perspiration — can last between three and five years while retaining its structure. Shell cordovan offers superior resistance due to its dense fibre composition. Vegetable-tanned straps develop a personal patina and may last considerably longer. Casati Milano offers an 18-month guarantee against manufacturing defects.