Omega · Constellation

Strap for Constellation Co-Axial 44 Chronograph Double Eagle Four Counters Red Gold / Black / Rubber

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

Lug width20 mm
Case diameter44 mm
Reference121.62.44.52.01.001 (aka: 12162445201001)
FamilyConstellation
MovementOmega caliber 3890 Hours, Minutes, Small Seconds | Date, Day | Chronograph, Column wheel | Chronometer
CaseRed 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 121.62.44.52.01.001 (aka: 12162445201001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Constellation 121.62.44.52.01.001 (aka: 12162445201001), seen from the bench

The Constellation represents one of Omega's historic collections, characterized by the distinctive design with claws on the case. It is powered by the automatic caliber 3890 with a column-wheel chronograph function and chronometer certification. The movement offers indication of hours, minutes, small seconds, date, day and chronograph.

Frequently asked questions

What is the exact lug width of the Omega Constellation 121.62.44.52.01.001?

The lug width of the Constellation 121.62.44.52.01.001 is 20mm. This measurement should be verified by positioning a digital caliper perpendicular to the base of the lugs, completely excluding the thickness of the attachment. Correct measurement is essential for ordering a compatible aftermarket strap.

What strap do you recommend for this rose gold Constellation?

For a 44mm Constellation 121.62.44.52.01.001 in rose gold, we recommend chocolate brown alligator for formal elegance, vegetable-tanned gray charcoal calf for sophisticated everyday wear, or cognac Shell Cordovan for evening occasions. The choice depends on your intended use and the patina you wish to develop over time.

How do you change the strap on an Omega Constellation?

The Constellation 121.62.44.52.01.001 features integrated lugs, so strap replacement requires a specific tool (spring bar tool) to remove the elastic spring bars from the lugs. We recommend performing the operation with the utmost care to avoid scratches on the case. If you are not experienced, the service is available at Casati Milano atelier by appointment.

Is an aftermarket 20mm strap truly compatible with the 121.62.44.52.01.001?

Yes, any strap with a 20mm lug width is technically compatible, provided that the thickness of the spring bars does not exceed the construction tolerance (approximately 2.5-3mm per side). We recommend verifying the strap's technical specifications before ordering. Milano Straps offers free verification via photograph on WhatsApp.

How long does a natural leather strap last on this watch?

Durability depends on the material and use. Quality alligator or calf leather, with moderate daily use, typically lasts 3-5 years before the leather begins to show significant wear. Shell Cordovan, being denser, can reach 6-8 years. Direct sun exposure and humidity accelerate aging. Casati Milano offers an 18-month warranty on every custom strap.

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