Omega · Constellation

Strap for Constellation Master Chronometer 41 Yellow Gold / Ceramic / Black

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

Lug width20 mm
Case diameter41 mm
Reference131.63.41.21.01.001 (aka: 13163412101001)
FamilyConstellation
MovementOmega caliber 8901 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2020
CaseCeramic, Yellow Gold

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 Constellation 131.63.41.21.01.001 (aka: 13163412101001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Constellation 131.63.41.21.01.001 (aka: 13163412101001), seen from the bench

The Constellation is an Omega collection featuring the self-winding caliber 8901 with co-axial escapement and chronometer certification. The movement provides hour, minute, second and date indication. The reference 131.63.41.21.01.001 belongs to the contemporary range of the model.

Frequently asked questions

What lug width does the Omega Constellation 131.63.41.21.01.001 have?

The Omega Constellation 131.63.41.21.01.001 has a lug width of 20mm, which is the space between the lugs where the strap attaches. Always verify with a digital caliper positioned perpendicularly between the two case lugs to confirm compatibility before purchasing.

What is the best strap for the Omega Constellation 131.63.41.21.01.001?

For a watch of this technical elegance, we recommend genuine alligator in black or dark brown for maximum sophistication, vegetable-tanned calf for versatility and noble aging, or shell cordovan for durability and intrinsic lustrous finish. The choice depends on your personal style and frequency of use.

How do I change the strap on my Omega Constellation?

The strap is changed by removing the lugs from the case using a specific spring bar tool, available from professional watchmakers. We recommend entrusting this operation to an expert to avoid scratches on the ceramic and yellow gold case, or contact Casati Milano atelier for direct assistance.

Is there an aftermarket strap compatible with reference 131.63.41.21.01.001?

Yes, any 20mm strap is compatible with this reference. On milanostraps.it you will find artisanal straps selected for proportions and style, customizable in length, initials and stitching thread to perfectly adapt to your wrist.

How long does a leather strap last on a wristwatch like the Omega Constellation?

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3-7 years with daily use, depending on care and frequency. Casati Milano straps include an 18-month warranty. Longevity increases if the strap is dried after humidity exposure and stored away from direct sunlight.

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