Omega · De Ville

Strap for De Ville Prestige Automatic 34.7 Stainless Steel / Yellow Gold / Silver / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter35 mm
Reference4300.31.00
FamilyDe Ville
MovementOmega caliber 1120 hours, minutes, seconds | date | chronometer
CaseYellow Gold, Stainless Steel

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the De Ville 4300.31.00

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The De Ville 4300.31.00, seen from the bench

The De Ville represents Omega's line of elegant watches, characterized by a classic design and versatile use. Reference 4300.31.00 is powered by the automatic Omega 1120 caliber with chronometer certification, offering hour, minute, second and date indications. The movement guarantees chronometric precision according to COSC standards.

Frequently asked questions

What is the lug width of the Omega De Ville 4300.31.00?

The lug width is 20 millimetres. This dimension is the fundamental design constraint for selecting a compatible strap: verify the distance between the two lateral lugs of the case, which must be exactly 20mm. It is a precise standard, not approximate.

Which strap do you recommend for this Omega dress watch?

It depends on the context of use. For maximum formality, brown alligator or black shell cordovan with a silver buckle. For everyday elegance, brown vegetable-tanned calf, which develops patina over time. For versatility, black calf, which works with practically every look. All must be 20mm lug width.

How do I change the strap on the 4300.31.00 without risking the case?

Use a spring bar tool (a small V-shaped metal instrument) to extract the elastic pins. Position yourself in a well-lit area. Press the pin from one side, lift the strap from the case, then reinsert the pin into the new strap ensuring both ends are firmly anchored. If you are not experienced, consult a watchmaker.

Is an aftermarket 20mm strap truly compatible with the De Ville 4300.31.00?

Yes, provided the lug width is actually 20 millimetres and made by a qualified maker. Milano Straps guarantee construction precision and certified compatibility. The real variable is the quality of the leather, the execution of the buckle, and the strength of the stitching.

How long does a leather strap last on a watch used daily?

It depends on the tanning method and usage. With vegetable tanning and moderate use, 3-5 years before considering restoration. Shell cordovan, being denser and more resistant, lasts 5-7 years or more. Leather degrades with direct sun exposure, salty sweat, and excessive humidity. Rotating between 2-3 straps prolongs the life of each one.

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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Casati Milano · Via XX Settembre 15, Milan · by appointment only