Strap for Datejust 31 Rolesor Everose Domed / Jubilee / Pink Roman

The lug width of the Rolex Datejust 31 178241-0064 is 16 millimetres. This specific measurement represents the space between the two attachment points of the case where the strap is inserted. It is measured perpendicularly between the two pins using a digital calliper, excluding the lugs themselves. This measure does not conform to the most common aftermarket standards, making the selection of a compatible strap a critical factor in the evaluation.

The ideal strap depends on use and aesthetic preference. For formal contexts, black alligator with vegetable tanning amplifies the elegance of the two-tone case. Vegetable-tanned calf with pronounced grain is recommended for daily wear, offering tactile comfort and breathability. Shell cordovan ensures a deep patina over time. For versatility, the 16mm NATO allows quick changes. All straps must be 16mm and compatible with Rolex bayonet mounting points.

Changing the strap requires a specific tool called a 'spring bar tool' or 'ansa remover'. Gently remove the old strap by extracting the spring bars connecting the strap to the case. Insert the spring bars into the new 16mm strap and position it correctly on the case's bayonet mounting points, pressing until a click indicates secure locking. Verify that the strap is equidistant on both sides before completing the operation. For vintage Rolex models, check for wear on the mounting points to avoid movement.

Yes, you can use a high-quality aftermarket strap, provided the lug width is exactly 16 millimetres. High-quality artisanal straps in alligator, vegetable-tanned calf, shell cordovan or FKM rubber ensure mechanical and aesthetic compatibility with the two-tone Datejust 31 case. Always verify that the strap has drainage holes and that the deployante is appropriate for the case diameter. Be wary of straps that exhibit excessive tolerances.

The lifespan of a leather strap depends on the tanning quality, usage and maintenance. A well-preserved alligator or vegetable-tanned calf strap has an average lifespan of 3–5 years of continuous daily wear. Shell cordovan can reach 5–7 years due to the density of equine fibres. Prolonged exposure to moisture, salt perspiration and temperature fluctuations accelerates wear. Regular maintenance with creams specific to vegetable-tanned leather extends longevity. Casati Milano guarantees 18 months against manufacturing defects.