Strap for Datejust 31 Rose Gold / Fluted / Butterfly / President

The Rolex Datejust 31 ref. 78275-0021 has a lug width of 16mm. This is a specific measurement that differs from more common sizes; it is essential to select aftermarket straps precisely at 16mm to ensure a correct fit within the lugs and avoid lateral play.

For an Everose gold case measuring 31mm, an alligator strap with vegetable tanning in burgundy, cognac or tobacco brown tones is the most aesthetically coherent choice. Shell cordovan offers a refined alternative for those who prefer a compact, lustrous surface. Smooth calf leather in warm tones provides a more everyday option with an evolving patina.

Strap replacement requires a spring bar tool to remove the spring bars securing the bracelet or strap to the case lugs. It is advisable to work on a soft surface to prevent scratches to the Everose gold case. Alternatively, the operation can be carried out by a watchmaker or directly at the Casati Milano atelier.

Yes. Milanostraps.it offers a selection of handcrafted 16mm straps compatible with the Rolex Datejust 31 78275-0021, made by hand in Italy using selected leathers. Standard 1.8mm diameter spring bars are compatible with Rolex lugs. A deployant clasp in rose gold is also available to maintain metallic consistency.

Longevity depends on the material and usage. A quality vegetable-tanned alligator strap, properly maintained and kept away from water and excessive perspiration, typically lasts between 2 and 4 years with daily wear. Shell cordovan, owing to its dense fibre structure, tends to last longer while developing a distinguished patina. Casati Milano provides an 18-month warranty against manufacturing defects.