Strap for Datejust 31 Rolesor Everose Domed Diamond / Oyster / Silver Computer

The correct lug width for the Rolex Datejust 31 178341-0036 is 16mm. This measurement refers to the distance between the two attachment points where the strap connects to the watch case. Precise measurement is essential to ensure the strap fits without play. Measure from lug to lug using a soft measuring tape positioned horizontally across the watch case.

For the Rolex Datejust 31 178341-0036 in rose gold Everose and stainless steel, we recommend a mature alligator strap (U-graining) or vegetable-tanned calf leather in mid-to-dark brown, Spanish or cognac tones. For a durable, highly polished option, shell cordovan is the premium choice. For more casual yet sophisticated versatility, a silk twill NATO strap or FKM rubber strap provides practical alternatives without compromising the watch's inherent formality.

Changing a strap on a Rolex Datejust 31 requires a spring bar tool or strap removal device. Place the watch on a soft cloth to prevent scratches. Locate the small hole under each lug and gently insert the tool to compress the internal spring mechanism of the spring bar. Once compressed, the lug will release from the case. Remove the old strap and insert the new one in reverse order, ensuring both ends of the spring bar click securely into place. If uncertain, consult a qualified watchmaker.

Yes, any strap with standard 16mm lug-width spring bars is compatible with the Datejust 31 178341-0036. Compatibility depends solely on lug width (16mm) and spring bar thickness. Handcrafted straps from Casati Milano meet these specifications whilst offering superior construction quality and aesthetic finishes compared to mass-produced alternatives. Always verify that the spring bar is correctly inserted and sits flush against the case without play.

Strap longevity depends on material type, tanning method, frequency of wear, and climate exposure. A vegetable-tanned calf strap worn daily typically lasts 3-5 years before showing significant wear. Shell cordovan, owing to its natural density, can endure 10-15 years or longer. Alligator offers intermediate durability, around 5-8 years. Quality leather develops natural patina over time—creasing, subtle colour shifts, and textural evolution that collectors consider desirable ageing. A well-maintained strap (protected from excessive moisture and direct heat) retains structural integrity for decades.