Omega · Constellation

Strap for Constellation Co-Axial 35 Stainless Steel / Red Gold / Silver

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

Lug width20 mm
Case diameter35 mm
Reference123.20.35.20.02.001 (aka: 12320352002001)
FamilyConstellation
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
CaseRed 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 →

Straps for the Constellation 123.20.35.20.02.001 (aka: 12320352002001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Constellation 123.20.35.20.02.001 (aka: 12320352002001), seen from the bench

The Omega Constellation reference 123.20.35.20.02.001 is powered by the automatic caliber 2500 with co-axial escapement and chronometer certification. The movement offers indication of hours, minutes, central seconds and date. The functions include the Co-Axial Escapement technology developed by Omega to reduce the internal friction of the mechanism.

Frequently asked questions

What is the lug width of the Omega Constellation 123.20.35.20.02.001?

The lug width of the Constellation 123.20.35.20.02.001 is exactly 20mm. This dimension indicates the distance between the two metal lugs of the case where the strap is attached. It is essential to verify this measurement at the time of purchase to ensure complete compatibility.

What strap material do you recommend for the Constellation 123.20.35.20.02.001?

For the Constellation 123.20.35.20.02.001 we recommend natural alligator for refinement and patina over time, shell cordovan for durability and water resistance, or Taurillon calf for minimalist elegance. The choice depends on daily use and the desired aesthetic profile. The rose gold of the case pairs particularly well with warm tones of cognac and mahogany.

How do you change the strap on a Constellation 123.20.35.20.02.001?

To change the strap on the Constellation, you will need a spring bar removal tool (the metal lugs). Place the watch on a soft cushion, insert the tool into the small lateral seat of the lug until the spring clicks, and gently pull outward. Repeat on the other side. The operation requires precision to avoid scratches on the case.

Is the strap on my Constellation 123.20.35.20.02.001 compatible with aftermarket options?

Yes. Any 20mm strap is mechanically compatible with the lug width. However, we recommend verifying the total width of the lug itself (20mm, precisely) to avoid excessive play. Milano Straps selects exclusively straps that meet the precision tolerances required by a watch of this caliber.

How long does a leather strap last on an Omega Constellation?

The lifespan of a leather strap depends on the material, use, and maintenance. Natural alligator lasts 4-6 years with light daily use. Taurillon calf lasts 3-5 years. Shell cordovan, thanks to fiber density, exceeds 7-8 years. Regular maintenance (gentle cleaning, conditioning with specific creams) significantly extends the life of the 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.

Request an appointment →

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