Omega · Constellation

Strap for Constellation Co-Axial 38 Stainless Steel / Yellow Gold / Champagne

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Omega Constellation 123.20.38.21.08.001 (aka: 12320382108001) is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter38 mm
Reference123.20.38.21.08.001 (aka: 12320382108001)
FamilyConstellation
MovementOmega caliber 8500 Hours, Minutes, Seconds | Date | Chronometer, Co-Axial escapement
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 →

The Constellation 123.20.38.21.08.001 (aka: 12320382108001), seen from the bench

The Constellation represents one of Omega's historic lines, characterized by the distinctive design with griffes on the bezel. It is equipped with the automatic Caliber 8500 with co-axial escapement and chronometer certification, featuring hour, minute, second and date indications. The reference 123.20.38.21.08.001 features a 38mm case with the fluted crown typical of the collection.

Frequently asked questions

Can a standard strap be fitted to the Omega Constellation 123.20.38.21.08.001?

No, not a standard strap. The lug attachment is not a conventional straight bar, but integral to the case geometry. What is possible is to commission a fully bespoke strap, engineered precisely to your watch by <a href="/pages/casati-booking">Casati Milano</a>, the only approach that respects the Constellation's architecture.

How does the bespoke strap creation process work for this model?

The craftsman surveys with millimetre precision the form of the integrated lugs, examines the proportions of the case and your wrist, discusses leather and buckle choice with you, then constructs an entirely personalised strap. The process occurs only by appointment at <a href="/pages/casati-booking">Casati Milano</a>, ensuring a result that dialogues flawlessly with the original design.

Which leather suits the character of the Constellation 123.20.38.21.08.001?

Noble, refined leather: satin calf, aged cordovan, naturally shaded aniline. Avoid coarse grains or heavily textured surfaces, which would jar against the geometric elegance of the case. The leather must accompany the watch's proportion, not compete with it.

How long does a well-made artisanal strap last?

A strap crafted from superior leather and robust stitching, such as those from <a href="/pages/casati-booking">Casati Milano</a>, lasts decades if properly maintained. The leather moreover develops a patina that amplifies its aesthetic value over time, making it a living companion to the watch.

Why does the Constellation employ a co-axial escapement?

The co-axial escapement drastically reduces wear on the escape components compared to conventional systems, ensuring superior chronometric stability and longer service intervals. It is a technical choice that testifies to Omega's ambition to transcend the constructive limits of classical watchmaking without sacrificing elegance.

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