Omega · Constellation

Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel / Yellow Gold / Champagne Diamond

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter29 mm
Reference131.20.29.20.58.001 (aka: 13120292058001)
FamilyConstellation
MovementOmega caliber 8700 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2018
CaseYellow Gold, Stainless Steel

Recommended spring bar

Spring bars Omega 18mm — single diameter

Technical match for lug width and diameter · lug 18 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Constellation 131.20.29.20.58.001 (aka: 13120292058001)

Selected for the 18 mm lug width

All 18 mm straps →

The Constellation 131.20.29.20.58.001 (aka: 13120292058001), seen from the bench

The Omega Constellation reference 131.20.29.20.58.001 (aka: 13120292058001) is powered by the automatic caliber 8700 with Co-Axial escapement and chronometer certification. The movement offers hour, minute, second and date indication. The case features 17.60mm lugs.

Frequently asked questions

What is the lug width of the Omega Constellation 131.20.29.20.58.001?

The lug width is 18mm. This measurement is the reference for purchasing any replacement strap compatible with this model. The lug width corresponds to the internal distance between the two spring bar attachments located on the sides of the case.

What is the best strap material for the Constellation 131.20.29.20.58.001 two-tone?

For the two-tone yellow gold and steel version, alligator in cognac or dark brown tones represents the most elegant choice, as the natural unpolished grain creates chromatic harmony without competing with the metals. Alternatively, polished black shell cordovan remains the most versatile and formal solution.

How do you change the strap on the Omega Constellation 131.20.29.20.58.001?

The change is made using a spring bar: a small metal lever that secures the strap to the case lugs. Gentle pressure with a flat tool on the spring bar allows you to release it from one side, remove the old strap and insert the new one. It is advisable to perform this operation with steady hands or at an experienced craftsman's to avoid damage to the lugs.

Is there an aftermarket strap compatible with model 131.20.29.20.58.001?

Yes, any strap made with 18mm lug width is compatible. Milano Straps offers handcrafted customizable straps in leather, rubber and plant-based materials, with stitching and initial options, all suitable for this Omega reference.

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

The durability depends on the material and usage. An alligator with vegetable tanning lasts on average 3-5 years with moderate daily use. Shell cordovan, due to its density, can reach 5-7 years. Vulcanized rubber offers greater longevity (7-10 years), but requires periodic inspection of stitching points.

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