Strap for De Ville Prestige Co-Axial 39.5 Stainless Steel / Black

The Omega De Ville 424.13.40.20.01.001 has a lug width of 20mm. This measurement is essential for selecting compatible straps: the 20mm represents the exact distance between the two attachment pins on the 39.50mm case. You can verify it by measuring with a digital caliper the distance between the inner edges of the lugs.

For this model we recommend natural alligator or shell cordovan, as their grain and patina over time enhance the elegance of the satin-finished steel case. Black alligator maintains a formal profile, while dark brown (cognac) creates a warm balance. Vegetable-tanned calf leather is a more accessible choice with lower maintenance, ideal if you wear the watch daily.

The strap is changed using a spring bar tool: insert the flat tip under the attachment pin to release the internal spring, then remove the old strap. Insert the pins of the new strap (always 20mm) into the lugs and press until the spring is fully secured. If you are not experienced, contact a professional watchmaker to avoid damage.

Any strap with a 20mm lug width is compatible. You can choose from alligator, shell cordovan, calf leather, NATO fabric and natural rubber, as long as the width is exactly 20mm. Always verify the seller's specifications to avoid measurement errors.

A quality leather strap (alligator or shell cordovan) lasts 3-5 years with daily use, developing a characteristic patina. Duration depends on the environment (humidity, sweat), frequency of use and maintenance. Vegetable-tanned leather can last 2-3 years if subjected to heavy wear. Casati Milano guarantees 18 months on all custom straps.