Omega · Constellation

Strap for Constellation Quartz 39 Chronograph Stainless Steel / Yellow Gold / Black

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

Integrated bracelet

The Omega Constellation 1242.50.00 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 diameter39 mm
Reference1242.50.00
FamilyConstellation
MovementOmega caliber 1270 Small seconds, Hours, Minutes | Chronograph
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 1242.50.00, seen from the bench

The Constellation 1242.50.00 is a chronograph from the Omega collection equipped with the caliber 1270. The movement offers hours, minutes, small seconds and chronograph functions. The reference is part of the Constellation line, one of the brand's historic collections.

Frequently asked questions

Can a standard strap be mounted on the Omega Constellation 1242.50.00?

The Constellation 1242.50.00 features a proprietary lug system that does not accept standard straight-bar straps. The solution is a custom-built strap, created directly on your watch at <a href="/pages/casati-booking">Casati Milano</a>, where the craftsman adapts the proportions to the case curves and your requirements.

How exactly does the custom strap process work for this model?

The artisan at Casati Milano observes the watch on the wrist, measures the lug and passant spaces, and selects leather and buckle in harmony with the case proportions. The strap is then hand-crafted, stitched and finished in-atelier, ensuring it becomes a coherent part of the Constellation's original design language.

Which leather type best complements the character of the Omega Constellation 1242.50.00?

It depends on your desired emphasis: alligator or crocodile with subtle texture enhances the gold-steel duality and model's preciousness. Vegetable-tanned leathers with natural grain communicate restraint and evolution over time. Cordovan and shell cordovan develop a patina that dialogues beautifully with the watch's heritage.

How long does a well-made strap last on a Constellation?

An artisanal strap, crafted from quality leather and hand-stitched with traditional methods, lasts 5 to 10 years depending on usage and routine maintenance. Leather, if properly cared for, ages magnificently, developing a patina that enriches the visual character of your Constellation.

Why is the Constellation 1242.50.00 considered a historical reference in horology?

The Constellation was born in 1952 to celebrate the chronometric records of the Geneva Observatory, embodying Swiss technical excellence. The 1242.50.00 represents the modern evolution of this heritage, combining the Omega 1270 calibre with balanced proportions that make it a recognisable and timeless instrument in the luxury watch market.

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