Omega · Constellation

Strap for Constellation Co-Axial 38 Day-Date Stainless Steel / Black

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

Integrated bracelet

The Omega Constellation 123.10.38.22.01.001 (aka: 12310382201001) 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
Reference123.10.38.22.01.001 (aka: 12310382201001)
FamilyConstellation
MovementOmega caliber 8602 hours, minutes, seconds | date, day | chronometer, co-Axial escapement
CaseStainless 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 123.10.38.22.01.001 (aka: 12310382201001), seen from the bench

The Constellation Co-Axial 38 Day-Date is a stainless steel model with integrated lugs and a black dial, featuring Omega's iconic five-pointed star crown and fluted bezel. Originally introduced in 1952 as a precision chronometer, this contemporary version combines technical rigor with refined styling. The 38mm case architecture requires bespoke leather strap solutions to preserve its distinctive integrated lug design.

Frequently asked questions

Can a standard strap be fitted to the Omega Constellation 123.10.38.22.01.001?

No, the bracelet is integrated into the case. The lug attachment is not standard, and an ordinary strap will not fit. To change it, I craft something entirely new directly onto the watch, in the atelier.

How does a custom strap work for this Constellation?

I work only at <a href="/pages/casati-booking">Casati Milano</a>, by appointment. I take the watch in hand, measure the case down to every detail — the lugs, the spacing, the height — and shape the strap so it integrates perfectly with the original case geometry.

Which leather do you recommend for the Constellation?

Mississippi Alligator. This Constellation is both sporty and refined — it carries the soul of a chronometer but the bearing of an elegant watch. Alligator resists daily wear well and ages in a controlled way, without losing its character.

How long does a well-made strap last?

It depends on use and care. With thoughtful maintenance — protecting from rain, letting the leather breathe — a good strap lasts 5 to 7 years. The leather develops a patina and tells the story of its time at your wrist.

Why was the Constellation originally conceived as a precision chronometer?

In 1952, Omega designed it to measure time with rigour, not merely to look beautiful. The integrated lugs, the crown with the star — everything speaks of that heritage. A strap that respects this history must be built with the same seriousness.

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.

Request an appointment →

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