Strap for Datejust 31 Stainless Steel / Rose Gold / Fluted / Chocolate - Diamond / Jubilee

The lug width is 16 millimetres. This measurement represents the distance between the case lugs and must be respected rigorously when selecting a strap. A lug width that is too wide or too narrow compromises buckle and keeper fit, creating aesthetic and functional issues. To verify precisely, use a digital calliper positioned perpendicular to the lugs.

For this bi-metal watch in Everose and steel, we recommend dark brown or black alligator, which enhances the case's sobriety. Alternatively, cognac shell cordovan dialogues elegantly with the warm pink tone of Everose, ageing nobly over time. For a sustainable option, vegetable-tanned calf maintains warm tones without chromatic conflict. The choice depends on intended use and personal aesthetic preference.

Strap replacement requires a specialised tool to extract the lugs from the case. DIY is not advised: the risk of scratching the Everose case is high. Consult a qualified watchmaker or, better yet, commission a bespoke strap from an experienced artisan, who will teach the correct replacement procedure during initial fitting. Casati Milano provides detailed guidance via WhatsApp.

Yes, provided it features a 16-millimetre lug width and has been constructed to precise tolerances. A high-quality aftermarket strap preserves the watch's functional and aesthetic integrity. Avoid economical straps with approximate finishes: manufacturing quality directly reflects the wearing experience. Milano Straps offers artisanal 16mm straps built to Rolex specifications.

Longevity depends on material and usage. Quality alligator lasts 3–5 years with daily wear. Shell cordovan, thanks to dense fibre, may last 5–7 years or longer, improving with patina. Vegetable-tanned calf requires greater maintenance and lasts approximately 2–3 years. Cotton NATO lasts 4–6 years. Regular maintenance—cleaning, protection from extreme humidity and perspiration—significantly extends strap lifespan.