Omega · Constellation

Strap for Constellation Co-Axial 35 Small Seconds Red Gold / Diamond / MOP Supernova

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
Reference123.58.35.20.55.001 (aka: 12358352055001)
FamilyConstellation
MovementOmega caliber 2202 hours, minutes, small seconds | co-Axial escapement, 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 123.58.35.20.55.001 (aka: 12358352055001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Constellation 123.58.35.20.55.001 (aka: 12358352055001), seen from the bench

The Omega Constellation reference 123.58.35.20.55.001 is powered by the automatic caliber 2202 with Co-Axial escapement and chronometer certification. The movement offers hours, minutes and small seconds indication. The construction includes COSC certification for chronometric precision.

Frequently asked questions

What is the exact lug width of the Omega Constellation 123.58.35.20.55.001?

The Omega Constellation 123.58.35.20.55.001 is fitted with a 20mm lug width. This measurement represents the internal distance between the two lugs of the case and is essential for strap compatibility. All straps designed for 20mm will fit perfectly without lateral movement.

Which strap material pairs best with the Constellation in rose gold?

Alligator represents the most elegant and refined choice, with natural texture that enhances the jewelry character. Vegetable-tanned calf also offers versatility, developing a patina that ages gracefully. Shell cordovan is a bold choice for those who appreciate character and robustness. Avoid undersized straps: maintain a width of 18-20mm for correct proportions.

How do you change the strap on a 35mm Omega Constellation?

Position the watch on a soft surface. Use a spring bar tool to gently compress the spring at both sides of the lug, one at a time. Remove the old strap and insert the new one by aligning it perfectly with the lugs, pressing until you hear the click of closure. If you are not confident, consult a professional watchmaker.

Is the strap on the Constellation 123.58.35.20.55.001 interchangeable with other Omega models?

Compatibility depends on the lug width. If another watch features a 20mm lug width (as many Seamaster or other Constellation models do), the strap is interchangeable. Always check the lug width of your specific model to avoid mistakes. Consult the official Omega technical sheet or measure directly with a caliper.

How long does a leather strap last on a daily-wear watch like the Constellation?

A quality leather strap, worn daily, typically lasts 3-5 years before showing significant signs of wear. Alligator and shell cordovan last longer thanks to more resistant fiber. Vegetable tanning develops an elegant patina over the years. Exposure to sweat, water, and sunlight accelerates aging. Rotating between multiple straps extends the life of each one.

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