Rolex
Datejust 31 178313-0061— lug 16mm

The lug width of the Rolex Datejust 31 178313-0061 is 16 millimetres. This dimension is the standard for Datejust 31 models fitted with either Jubilé or Oyster bracelets. Correct measurement is taken by measuring the linear distance between the two case lugs (small metallic protrusions), not the external diameter. A 16mm strap will fit perfectly without excessive play and ensures proper functioning of quick-change mechanisms.

The optimal strap choice depends on intended use and personal preference. For formal elegance, we recommend dark brown or black alligator with stainless steel deployante: the regular texture dialogues beautifully with the lustre of the bimetallic gold and steel. For daily versatility, vegetable-tanned calf leather in bourbon or cognac tones develops patina over time. For humid environments or sports activities, treated rubber maintains absolute durability without compromising aesthetics. Shell cordovan represents the refined compromise between natural lustre and extraordinary longevity.

The Rolex Datejust 31 178313-0061 uses standard 16mm spring bars for attachment. To remove the strap, employ a dedicated spring bar tool to gently compress the spring and release the bars from their seats in the case. Position the tool opposite the side from which you wish to extract the strap, push gently inward and pull the strap vertically. The reverse process allows installation of the new strap. We strongly recommend executing this operation with extreme care to avoid scratching the case, or consult a professional.

Yes, it is possible to use quality aftermarket straps compatible with the Rolex Datejust 31 178313-0061, provided they respect the 16-millimetre lug width and standard spring bar attachments. Artisanal straps crafted from alligator, vegetable-tanned calf or Japanese shell cordovan of elevated quality do not compromise the timepiece's value and indeed permit aesthetic personalisation consistent with your taste. It is essential to select reputable suppliers who guarantee precise finishing and authentic materials to ensure accurate compatibility and longevity.

The lifespan of a natural leather strap depends on intensity of use, climatic conditions and material quality. Excellent-quality alligator or vegetable-tanned calf leather can endure between 5 and 8 years of moderate daily wear. Japanese shell cordovan, owing to its unique natural structure, can exceed 10 years. Treated rubber offers even greater durability, up to 10-15 years. The patina that develops on natural leathers is desirable: it evidences mindful use. To extend longevity, avoid prolonged water contact, direct sunlight exposure and extreme temperatures, whilst performing regular cleaning with a soft cloth.