Omega
De Ville 4533.51.00— lug 20mm

The lug width of the De Ville 4533.51.00 is 20mm. This specification allows for longer straps compared to models with 18mm lug width, offering greater comfort on medium to large wrists. To verify the measurement, remove the original strap and measure the distance between the metal lugs: they must be exactly 20mm.

Genuine alligator remains the canonical choice for this dress watch: the characteristic grain does not compress the wrist and the texture catches light in an elegant manner. For daily versatility, barrel-dyed calf offers natural softness and a patina that improves with use. If you seek practicality in humid environments, natural rubber with a deployant clasp maintains formal elegance without sacrificing durability.

The strap on the 4533.51.00 is replaced using a spring bar tool. Position the watch on a stable surface, locate the two metal lugs underneath the horns, push inward one at a time to release the old strap. Insert the new strap ensuring both lugs click properly into place. If you prefer to avoid any risk, the Casati Milano atelier provides custom installation.

Yes, any strap with 20mm lug width attachments is compatible with the 4533.51.00. However, to maximize aesthetic harmony between the 38.70mm case and strap proportions, we recommend specific thicknesses and widths: the ideal thickness is 3.5-4mm, while the width at the lug base must be 20mm. Custom straps from Casati Milano guarantee perfect compatibility and artisanal finishing.

A quality alligator or calf strap, worn daily, has an average lifespan of 3-5 years before requiring replacement. Longevity depends on sun exposure, humidity, frequency of changes, and care. Casati Milano artisanal straps are constructed with superior thicknesses (0.5-0.7mm of noble leather) and come with an 18-month warranty; many clients report 6-8 years of use without structural degradation. Seasonal rotation among straps extends the life of each one.