Omega
De Ville 4833.51.31— lug 18mm

The Omega De Ville 4833.51.31 is fitted with an 18 millimeter lug width. This measurement is specific to the De Ville line of this generation and is essential to verify compatibility before purchasing an aftermarket strap. The 18mm represents the balance between structural solidity and aesthetic refinement, consistent with the proportions of the 38.70mm case.

The ideal strap depends on intended use and dial finish. For maximum formality, black alligator with natural thread stitching amplifies the urban character. For daytime versatility and evolving patina, vegetable-tanned brown or cognac calf is the most recommended choice. Shell cordovan represents the most sophisticated option for those desiring scratch resistance and natural brilliance. NATO straps are discouraged, as they conflict with the formal identity of the watch.

The strap is changed using a specialized spring bar tool for extracting the pins. After removing the last millimeters of strap from the case, gently compress the retaining pin and extract it perpendicular to the lug. Once freed, insert the new strap ensuring the pins engage completely in the designated holes. It is advisable to perform this operation on a soft surface to avoid scratches on the steel case.

Yes, any strap certified for 18mm lug width is compatible. The Milano Straps collection offers handcrafted straps in alligator, vegetable-tanned calf, shell cordovan and alternative materials, all specifically sized for this measurement. It is important to verify that the strap is declared for 18mm and that the buckle or deployant is appropriate for the case diameter.

The lifespan of a leather strap depends on intensity of use and tanning quality. A good quality vegetable-tanned calf strap lasts an average of 2-3 years with intensive daily use, up to 4-5 years with moderate use. Shell cordovan, due to its structural density, can exceed 5-6 years. Alligator is positioned in the middle, with a lifespan of 3-4 years. Casati Milano straps include an 18-month warranty and can be regenerated through leather reconditioning or buckle replacement.