Technical Archive

Omega
De Ville 4533.31.00— lug 20mm

Omega De Ville 4533.31.00: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

De Ville Co-Axial 38.7 GMT Stainless Steel / Silver / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Omega 4533.31.00
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

4533.31.00

Movement

Omega caliber 2628 Hours, Minutes, Additional 24 Hour Hand (adjustable), Seconds | Date | Co-Axial Escapement, Chronometer

The Heritage

The Omega De Ville 4533.31.00 is a refined wristwatch from a family established in 1960, featuring a 38.70mm stainless steel case with a clean dial displaying hours, minutes, 24-hour GMT, and date. It is powered by the Omega 2628 Co-Axial caliber with column escapement, delivering certified chronometry and reduced maintenance intervals. The strap lug width is 20mm, precisely calculated from the case proportions to ensure proper fit without gaps or overlaps.

FAQ

What is the lug width of the Omega De Ville 4533.31.00?

The lug width of the De Ville 4533.31.00 is 20mm, measured between the inner shoulders of the lugs. This dimension is precise and does not allow for variations: an 18mm strap would create visible gaps, while a 22mm strap would force the fit. Milanostraps provides straps cut exactly at 20mm to guarantee perfect adaptation to the original lugs.

Which strap material is most recommended for the De Ville 4533.31.00?

Alligator remains the most authentic choice for the De Ville: its uniform grain naturally complements the architectural simplicity of the case, and the leather develops a warm patina that amplifies the watch's story over time. Shell cordovan offers a structured texture for those who prefer greater rigidity. Vegetable-tanned calf represents a more versatile alternative with a surface that ages visibly.

How do you replace the strap on an Omega De Ville 4533.31.00?

The De Ville is fitted with spring bars and pins (or screw-down lugs, depending on the year of production). To replace the strap: 1) remove the pins from the lugs using a dedicated tool (spring bar tool); 2) extract the old strap; 3) insert the new strap ensuring that the spring bars are correctly aligned with the lugs; 4) press the pin until you hear a click. We recommend having the operation performed by a qualified watchmaker if you do not have experience with the tools.

Can I use an aftermarket strap on an Omega De Ville 4533.31.00?

Yes, provided the strap is built to measure at 20mm and is compatible with the lug width. Milanostraps straps are designed and cut specifically to fit the proportions of the De Ville without compromise. The quality of the leather and the finishing must respect the technical and aesthetic standard of the Omega case to maintain the overall harmony of the timepiece.

How long does a leather strap last on the De Ville 4533.31.00?

A quality alligator or shell cordovan strap, subjected to regular maintenance (gentle cleaning, conditioning every 6-12 months), can last 5-8 years before requiring replacement. Durability depends on frequency of use and environmental conditions (humidity, sun exposure). A vegetable-tanned calf ages more rapidly and visibly, offering more frequent replacement as part of its evolutionary charm. Milanostraps offers an 18-month warranty on all made-to-measure straps.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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The atelier's website: casatimilano.com