Chopard
L.U.C 161918-5002— lug 18mm

The lug width is 18 mm. This measurement is calculated to maintain the correct optical proportions of the 42 mm case relative to the wrist. To verify compatibility with a replacement strap, measure the internal space between the lugs using a digital calliper, ensuring the strap's lug end fits precisely at 18 mm at the insertion point.

Alligator leather represents the most elegant choice, as its natural grain and warm patina complement the rose gold case perfectly. Alternatively, shell cordovan offers rigidity and develops natural lustre over time, whilst calf leather with vegetable tanning ensures daily versatility. For sports applications, a thick canvas NATO strap with rubber backing is practical and durable.

Remove the strap using a spring bar tool or precision implement. Position the lever beneath the lower lug spring, gently press upward to compress the spring, and slide the strap out. Repeat for the upper lug. Insert the new strap by aligning its lug end with the spring, compress the spring, and slide the strap until the spring engages in the seat. Verify that the strap is securely fastened before wearing the timepiece.

Yes, provided the strap measures exactly 18 mm at the lug insertion point. Verify before purchase that the manufacturer specifies this dimension for the 18 mm version. Bespoke leather straps allow you to request specific adjustments and finishes tailored to enhance the elegance of your watch.

Durability depends on material and usage. Alligator and shell cordovan, if properly maintained (avoid prolonged direct moisture exposure and protect from thermal shock), last 5–10 years of regular wear. Calf with vegetable tanning tends to age faster, approximately 3–5 years. Frequent exposure to water, intense perspiration, and UV radiation reduce longevity. A quality crafted strap can be repaired by replacing only the worn section (buckle and keeper), extending the life of the piece.