Strap for De Ville Master Chronometer Stainless Steel / Black

The Omega De Ville 434.13.40.20.01.001 features a 19.00mm lug width. This is an intermediate, non-standardized measurement chosen by Omega to maintain balanced proportions on the 40mm case. To verify compatibility, measure the space between the lugs using a digital caliper at the section where the strap anchors to the case.

For the De Ville 434.13.40.20.01.001, we recommend black or dark brown alligator for formal occasions, or vegetable-tanned calf for daily dress-sport wear. Shell cordovan represents the intermediate choice: naturally rigid, it develops patina over time. All materials must feature a 19mm lug width to ensure proper fit to the case.

The procedure requires a spring bar tool: position it on the lower tip of the lug, push gently upward to access the pin, creating space to remove the old strap. Insert the new strap from the top, aligning the hole with the pin, and release gradually. Do not force: if the strap does not slide smoothly, verify that the measurement is indeed 19mm and that the pin is fully retracted.

Yes. The Omega De Ville 434.13.40.20.01.001 accepts any strap with a 19mm lug width, provided the strap has been manufactured with metrological precision. Verify that the manufacturer clearly states 19mm and not 19±0.5mm, as wide tolerances carry risks of unwanted play. On milanostraps.it you will find 19mm straps tested for compatibility with this model.

Durability depends on material and usage. A quality alligator strap lasts 3-5 years with light daily use, 2-3 years with heavy daily use. Vegetable-tanned calf lasts 2-3 years, then requires edge reconditioning and stitching. Shell cordovan exceeds 5 years thanks to its intrinsic rigidity, which reduces stress on stitching. Atelier Casati Milano offers an 18-month warranty on made-to-measure straps and stitching replacement service beyond the warranty period.