Milano Straps
← OmegaSearchCart
Menu

Omega · Constellation

Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Sedna Gold / Diamond / MOP

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

Lug width

18mm
18 mm strapsAll Omega
Lug width18 mm
Case diameter29 mm
Reference131.58.29.20.55.002
FamilyConstellation
MovementOmega caliber 8701 Hours, Minutes, Seconds | Date | Chronometer, Co-Axial Escapement
CaseSedna Gold

Recommended spring bar

Spring bars Omega 18mm — single diameter

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

View product →
All Omega spring barsOpen →

The Constellation 131.58.29.20.55.002, seen from the bench

The Constellation represents one of Omega's historic lines, characterized by the automatic caliber 8701 movement with Co-Axial escapement and chronometer certification. The model features hour, minute, second and date functions. The case mounts 17.60mm lugs and carries the reference 131.58.29.20.55.002.

Frequently asked questions

What is the lug width of the Omega Constellation 131.58.29.20.55.002?

The <a href="/pages/termine-glossario/misura-ansa">lug width</a> of the Constellation 131.58.29.20.55.002 is 18mm. This dimension is specific to the Constellation models of 29mm in this generation and is easily measurable by positioning a caliper between the lug pins on the case.

What type of strap pairs best with the Omega Constellation 131.58.29.20.55.002 in Sedna Gold?

A brown or cognac <a href="/pages/termine-glossario/alligatore">alligator</a> strap perfectly complements the Sedna Gold, enhancing the warmth of Omega's proprietary alloy. Alternatively, <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> calf leather in tobacco or hazelnut offers a more casual aesthetic while maintaining elegance.

How do I change the strap on the Omega Constellation 131.58.29.20.55.002?

The Omega Constellation features lugs that require specific tools for spring bar removal. We recommend entrusting the task to an authorized Omega service center or a specialized craftsman. Avoid applying excessive force that could scratch the Sedna Gold case.

Can I use an aftermarket strap with <a href="/pages/termine-glossario/deployante">deployant clasp</a> on the Constellation 131.58.29.20.55.002?

Yes, absolutely. A quality 18mm strap with <a href="/pages/termine-glossario/deployante">deployant clasp</a> is an intelligent choice to protect the Sedna Gold from accidental scratches and ensures a more secure closure compared to standard buckles. Artisanal 18mm straps from Milano Straps support this configuration.

What is the average lifespan of a leather strap for this watch?

A quality <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> or <a href="/pages/termine-glossario/alligatore">alligator</a> strap, worn daily, lasts an average of 3–5 years. <a href="/pages/termine-glossario/concia-vegetale">Vegetable-tanned</a> leather tends to develop a more pronounced patina and may require replacement slightly sooner. Regular maintenance (drying after moisture, conditioning) significantly extends service life.

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