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

The Rolex Datejust 31 with reference 278341rbr-0023 features a lug width (also called ansa width) of 16 millimetres. This is the distance between the two contact points on the case where the strap is inserted. Accurate measurement of this dimension is essential to ensure a perfect fit without play or excessive compression of the strap against the case lugs.

For the 278341rbr-0023 in Rolesor Everose with diamond bezel, straps in premium leather are recommended: alligator, vegetable-tanned calf, or shell cordovan. These materials respect the inherent elegance of the watch and develop a patina that improves with age. NATO and rubber sports straps are valid alternatives for those seeking everyday versatility. The 16mm lug width also allows experimentation with unconventional colours—chocolate brown, burgundy, taupe—that pair naturally with Rolesor.

Although the Datejust 31 is a sophisticated timepiece, strap replacement is straightforward for the owner with basic tools: a spring bar tool and a soft, flat surface to avoid scratching the case. Position the 278341rbr-0023 so the lugs remain vertical. Insert the spring bar tool into the lateral hole of the lug, apply gentle downward pressure to compress the spring, and free the first ansa end. Repeat on the other side. Ensure the lugs remain securely anchored in the new strap's contact points—there should be no micro-gaps that could generate squeaking or localised wear.

Absolutely. A high-quality artisanal strap with a 16-millimetre lug width is fully compatible with the 278341rbr-0023. Milano Straps offers hand-crafted leather straps made to Haute Couture standards, with finishing details that further enhance the character of the Rolesor. The shoulder of the strap must be slightly tapered to ensure natural curvature over the lugs. Always ensure the leather has undergone vegetable tanning or equivalent processes that reflect durability and positive ageing consistent with Rolex's philosophy.

Durability depends on leather quality, frequency of wear, and environmental conditions. A high-quality alligator or shell cordovan strap with vegetable tanning, worn on a sedentary wrist 3–4 days weekly, typically lasts 3–5 years before showing visible wear (scuffs, micro-cracks). With periodic rotation and protection from accidental immersion and highly humid environments, longevity extends further. Milano Straps guarantees 18 months against manufacturing defects, independent of natural wear.