Omega · Constellation

Strap for Constellation Master Chronometer 36 Sedna / Blue / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter36 mm
Reference131.50.36.20.03.001 (aka: 13150362003001)
FamilyConstellation
MovementOmega caliber 8800 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2019
CaseSedna Gold

Recommended spring bar

Spring bars Omega 22mm — 1.8mm diameter

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Constellation 131.50.36.20.03.001 (aka: 13150362003001)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Constellation 131.50.36.20.03.001 (aka: 13150362003001), seen from the bench

The Omega Constellation reference 131.50.36.20.03.001 is equipped with the automatic caliber 8800 with co-axial escapement and chronometer certification. The movement offers indication of hours, minutes, seconds and date. The case features 22.20mm lugs.

Frequently asked questions

What is the exact lug width of the Omega Constellation 131.50.36.20.03.001?

The lug width is 22mm. This distance is measured between the pins that connect the case to the strap. To verify it, remove the integrated bracelet using a precision tool and measure the space between the two pins: you will find exactly 22mm. All aftermarket straps with 22mm lug width are compatible with this model.

Which strap material is most suitable for the Sedna Gold of the 131.50.36.20.03.001?

Alligator remains the natural choice for this rose gold model. The uniform rectangular grain of alligator creates an elegant aesthetic contrast with the warm tone of Sedna Gold. For a sophisticated alternative, vegetable-tanned calf develops an extraordinary patina over time and offers a smooth texture that emphasizes the formality of the watch. Shell Cordovan is a rare but fascinating choice, with a glassy luster that contrasts magnificently with the brushed finish of rose gold.

How to change the strap on the Omega Constellation 131.50.36.20.03.001?

Removing the integrated bracelet: obtain a spring bar tool that is gentle and specifically designed. Position the watch with the lugs facing you, insert the tip of the tool into the lateral hole of the spring pin to compress it slightly, then extract the pin. Repeat on both lugs. Insert the new 22mm strap in the same way, ensuring that the pin is completely seated in the case hole. We strongly recommend having a professional perform this operation if you do not have experience.

Is a 22mm aftermarket strap 100% compatible with the 131.50.36.20.03.001?

Yes, any strap with a 22mm lug width is mechanically compatible. However, aesthetic quality varies dramatically: artisanal straps in alligator, calf, or Shell Cordovan maintain the visual integrity of the watch, while low-quality straps flatten the character of the Constellation. Choose premium leathers — controlled grain, appropriate thickness, suitable finish — to respect the sophistication of this Omega masterpiece.

How long does a natural leather strap last on the Omega Constellation 131.50.36.20.03.001?

Longevity depends on use and leather quality. A premium alligator or calf strap, with appropriate care, maintains structural integrity for 3-5 years of daily wear. Shell Cordovan, thanks to its superior density, can last 5-7 years. The aging of natural leather is not deterioration: it is aesthetic evolution. The patina that forms — the natural creases, the tone variation — adds character. If the strap wears out, replacing it with Casati Milano straps allows you to extend the life of the watch indefinitely.

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