Omega · Constellation

Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Sedna Gold / Diamond / Silver - 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
Reference131.58.29.20.52.002
FamilyConstellation
MovementOmega caliber 8701 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2021
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

All Omega spring barsOpen →

Straps for the Constellation 131.58.29.20.52.002

Selected for the 18 mm lug width

All 18 mm straps →

The Constellation 131.58.29.20.52.002, seen from the bench

The Omega Constellation Manhattan 29 Co-Axial Master Chronometer (ref. 131.58.29.20.52.002) is a 29mm women's watch in Sedna Gold with 18mm lug width. It features the Omega 8701 Co-Axial movement, COSC-certified chronometer with 60-hour power reserve. The case is 8.7mm thick, water-resistant to 100m, with sapphire crystal and transparent caseback. Three diamond indices replace traditional markers at 12, 3, and 9 o'clock on the silver dial. The distinctive applied-gold Constellation star bezel remains the signature design element.

Frequently asked questions

What is the lug width of the Omega Constellation 131.58.29.20.52.002?

The Omega Constellation 131.58.29.20.52.002 has a lug width of 18mm. This width is specific to the 29mm women's collection and must be respected rigorously to ensure correct pairing with aftermarket straps, avoiding mechanical play or undesired detachment.

Which strap is best for the Omega Constellation 131.58.29.20.52.002?

The best strap depends on your style and context of use. Classic black alligator offers timeless elegance for any occasion. Brown shell cordovan is ideal for those who love a patina that evolves over time. Genoese calf in hazelnut tones pairs perfectly with the Sedna Gold. For summer, a lighter calf or FKM rubber strap maintains comfort without visual heaviness.

How do you change the strap on an Omega Constellation 131.58.29.20.52.002?

Strap replacement requires a spring bar tool to remove the two pins that anchor the strap to the lugs. Remove one end first by gently pushing the pin toward the center of the case, then the other. Insert the new strap by aligning the holes with the pins and ensure the pins are fully seated. If you are unsure, consult a professional watchmaker to avoid damage to the case.

Are 18mm aftermarket straps compatible with this model?

Yes, any strap with an 18mm lug width is compatible with the Omega Constellation 131.58.29.20.52.002. However, always verify that the width is exactly 18mm: even a 1-2mm difference would cause misalignment. The straps offered by milanostraps.it in the 18mm category guarantee construction precision and are tested on watches with this specification.

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

Durability depends on the material and daily use. A quality alligator or shell cordovan strap, with proper maintenance, lasts 3-5 years before requiring replacement. A vegetable-tanned calf strap is slightly more delicate, typically 2-4 years. Prolonged sun exposure, frequent perspiration, and ambient dryness reduce longevity. Casati Milano straps include an 18-month warranty and can be free-adjusted within the first six months.

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