Strap for Datejust 31 Stainless Steel / Oyster / Green

The lug width of the Rolex Datejust 31 278240-0011 is 16 millimetres. This measurement represents the distance between the two metal spring bars that pass through the case lugs and secure the strap. Precise adherence to this specification is essential for safe mounting and proper proportioning on the wrist.

For the Rolex Datejust 31, alligator leather is recommended for formal elegance, vegetable-tanned calf leather for developing patina over time, shell cordovan for those who appreciate noble ageing, or natural rubber for sports versatility. Material selection depends on primary use and personal preference for texture and comfort.

Strap replacement requires a spring bar tool. Insert the tool into the lateral gaps of the case lugs, gently lift the metal spring bar, and remove the old strap. Align the new strap's attachment points with the case holes and ensure the spring bar is completely locked into position. If uncertain, consult a professional watchmaker.

Yes, absolutely. The Datejust 31 accepts any high-quality strap with a 16mm lug width, including bespoke artisanal straps. Milanostraps offers compatible straps in various materials and finishes, providing hand-crafted construction with certified geometric compatibility with your timepiece.

A quality leather strap typically lasts 3-5 years with daily wear. Longevity depends on leather type (alligator and shell cordovan tend to last longer), frequency of wear, exposure to humidity and perspiration, and maintenance practices. Casati Milano straps are guaranteed for 18 months against manufacturing defects.