Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / MOP / Jubilee

The lug width of the Rolex Datejust 31 ref. 278341rbr-0026 is 16 millimetres. This measurement refers to the distance between the spring bars (perni) of the case where the strap attaches. Verifying this dimension before purchasing an aftermarket strap is essential, as an incompatible lug width would compromise both aesthetics and functionality. Milano Straps supplies exclusively 16mm straps tested on this reference.

For the 278341rbr-0026 we recommend premium alligator leather—cream or cognac tones complement the mother-of-pearl without visual competition. Shell cordovan is an exceptional alternative, offering superior durability and evolving patina. Vegetable-tanned calf leather suits those preferring minimalism and restraint. Avoid sports straps (rubber, NATO) which clash irrevocably with the proportional elegance of the Rolesor case.

Use a spring bar tool to gently compress the elastic pin on one side, extracting it from the case lug. Once removed, the original strap separates. Align the new strap holes with the lugs, reinsert the pin into the first hole, and whilst maintaining pressure, complete insertion into the second hole until it clicks into place. A straightforward operation requiring care: Casati Milano can guide you via WhatsApp during the process.

Yes, provided the lug width is precisely 16 millimetres and the strap meets comparable quality standards. Milano Straps supplies exclusively 16mm artisanal straps compatible with this reference, crafted in alligator, shell cordovan and certified calf leather. Technical compatibility does not guarantee aesthetic compatibility: leather quality and finishing must reflect the nobility of the Rolesor case materials.

Durability depends on material and usage patterns. Premium alligator typically lasts 3-5 years of daily wear before replacement, though patina continues improving aesthetically. Shell cordovan, being denser, may last 5-7 years. Finer calf leather has shorter lifespan (2-3 years) but develops characteristic softness. Regular care—protection from weather, drying after moisture exposure—significantly extends strap life. Casati Milano provides post-purchase guidance on maintenance.