Omega
De Ville 4840.21.00— lug 18mm

The Omega De Ville 4840.21.00 has a lug width of 18 millimetres. This measurement is standard for classic dress watches and ensures correct optical proportions between the 36.10mm case and the strap. Verify the measurement with a calliper on your internal lugs to exclude construction variants between different production years.

The ideal strap depends on frequency of use and aesthetic preferences. For maximum formal elegance, we recommend medium brown or black alligator. For everyday versatility, a vegetable-tanned calf leather in cognac or hazelnut pairs perfectly with the silver dial. For sports use and practicality, anthracite grey rubber or navy blue NATO offer comfort and restrained understatement. All straps must respect the 18mm lug width measurement.

In the case of the De Ville 4840.21.00 with non-integrated lugs, the change is straightforward: position the watch on a soft surface, insert a thin tool (strap removal tool or craft knife) into the groove of the spring bar located beneath the lug. Press gently downward to release the spring and extract the pin. Repeat on the other side. The operation requires precision to avoid scratching the case. If uncertain, consult an authorised Omega service centre.

Yes, absolutely. Quality aftermarket artisanal straps (alligator, vegetable-tanned calf, shell cordovan) are fully compatible with the Omega De Ville 4840.21.00 provided they respect the 18mm lug width. In fact, a custom-made strap from a specialist craftsman such as Casati Milano allows customisation in leather, colour and stitch thread that an original strap does not permit, while keeping the watch warranty intact.

The lifespan depends on the material and daily use. A quality artisanal alligator strap with vegetable tanning lasts an average of 3-5 years with daily wear. Calf leather, being more porous, may require replacement every 2-3 years if subjected to constant stress. Rubber is practically unlimited, but yellows over time when exposed to sunlight. To extend the life of the strap, alternate it with other options (summer/winter) and occasionally maintain it with creams specifically designed for fine leathers.