Rolex
Datejust 31 178384-0065— lug 16mm

The lug width of the Rolex Datejust 31 178384-0065 is 16 millimetres. This dimension, measured between the inner shoulders of the lugs, is specific to this series and does not correspond to common industrial standards. A compatible strap must respect this measurement precisely, otherwise it will not fit correctly on the case.

Alligator represents the most refined choice for this timepiece: the natural grain of the leather dialogues perfectly with the meteorite texture of the dial. Calf offers a finer, more uniform grain and better value, whilst shell cordovan guarantees superior water resistance and an authentically evolving patina. For those preferring practicality in humid climates, FKM rubber remains an intelligent choice.

Changing the strap requires a specific tool: a spring bar tool (or remove pin tool). Insert the thin tip of the tool into the gap between the lug and the bracelet, compress the internal spring slightly and push outward to release the link. It is advisable to perform this operation on a soft surface (felt, mat) to avoid accidental scratches on the case.

Yes, provided the strap is constructed with a 16-millimetre lug width and features the same primary fastening type (the ends that attach to the watch). High-quality aftermarket straps, crafted in certified alligator or shell cordovan, often offer superior tactile performance compared to original bracelets whilst maintaining total geometric compatibility.

Durability depends on the material and usage. A genuine alligator strap easily reaches 5–7 years with ordinary maintenance (periodic cleaning, conditioning every 6–12 months). Calf is slightly less resistant, approximately 3–5 years. Shell cordovan, thanks to vegetable tanning, can exceed 7–10 years. FKM rubber remains practically unalterable over time, ideal for those desiring absolute longevity.