Omega
De Ville 4100.31.00— lug 19mm

The lug width of the Omega De Ville 4100.31.00 measures exactly 19mm. This dimension is critical for strap compatibility: using a strap of different width (18mm or 20mm) would cause excessive structural play and compromise the integrity of the strap change. Always verify with a digital caliper before ordering your strap.

For the yellow gold De Ville we recommend dark brown alligator (belly grade) or French calf in cognac tones. Alligator offers a regular grain that enhances the dial's sobriety without distraction, while calf guarantees immediate softness and a patina that evolves over time. Both respect the aesthetic harmony between the noble metal and leather, creating a balanced chromatic dialogue.

Changing the strap on an Omega De Ville requires a specific tool for spring bar extraction (spring bar tool). Locate the spring bars inside the upper and lower lugs, use the tool to compress them laterally (without excessive force) and gently remove the old strap. Install the new one by perfectly aligning the spring bars in the slots and snap into place. If you are not experienced, entrust it to a watchmaker: the cost is minimal compared to the risk of damaging the case.

Yes, provided the strap has a lug width of strictly 19mm and is made with materials of quality appropriate to yellow gold (alligator, calf, shell cordovan). Avoid generic nylon or synthetic rubber straps, which would visually degrade a luxury watch. A handcrafted strap in fine leather offers better value for money than the original Omega strap, with customizations impossible in the factory.

Durability depends on the material and usage. Alligator lasts 5-7 years with moderate daily use; calf 4-6 years; shell cordovan 10-12 years. These timeframes are significantly extended with occasional wear (1-2 wears per week). Periodic cleaning with a damp cloth and exposure to dry air (not direct sunlight) preserves the structure. Change is not breakage, but the natural evolution of leather, which ages with dignity.