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Omega · Constellation

Strap for Constellation Manhattan 25 Quartz Stainless Steel / Yellow Gold / MOP

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

16mm
16 mm strapsAll Omega
Lug width16 mm
Case diameter25 mm
Reference131.20.25.60.55.002 (aka: 13120256055002)
FamilyConstellation
MovementOmega caliber 4061 hours, minutes
Year2018
CaseMother of Pearl | Yellow Gold, Stainless Steel

Spring bar

Spring bars for Omega

The right category for this model · choose the 16 mm size

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Straps for the Constellation 131.20.25.60.55.002 (aka: 13120256055002)

Selected for the 16 mm lug width

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The Constellation 131.20.25.60.55.002 (aka: 13120256055002), seen from the bench

The Omega Constellation reference 131.20.25.60.55.002 features the Omega 4061 caliber for hour and minute display. The model has 15.90mm lugs that define its ergonomics on the wrist. The technical configuration focuses on the essential functions of time indication.

Frequently asked questions

What is the lug width of the Omega Constellation 131.20.25.60.55.002?

The <a href="/pages/termine-glossario/misura-ansa">lug width</a> (ansa width) of the Omega Constellation 131.20.25.60.55.002 is 16mm. This dimension is specific to 25mm Constellation cases and is essential for ensuring a precise fit between the case lugs and the strap. Always verify the lug width before ordering a compatible aftermarket strap.

What is the best strap for the Omega Constellation 131.20.25.60.55.002?

For this bimetallic Constellation with mother-of-pearl dial, we recommend <a href="/pages/termine-glossario/alligatore">alligator</a> leather straps in grey or light blue to complement the dial's subtle tones, or premium vegetable-tanned calf leather in neutral shades such as beige or off-white. Your choice depends on personal style: alligator emphasises formal elegance, whilst quality calf develops a unique patina over time for everyday versatility.

How do I change the strap on my 25mm Omega Constellation?

Strap replacement requires removal of the spring bars that connect the lugs to the case. Use a spring bar tool to gently compress the internal spring and slide out the pin. This operation, whilst straightforward, must be performed carefully to avoid scratching the bimetallic case. If you prefer to avoid risk, the Casati Milano atelier offers professional strap-change service by appointment.

Is an aftermarket 16mm strap compatible with the 131.20.25.60.55.002?

Yes, any strap with a 16mm <a href="/pages/termine-glossario/misura-ansa">lug width</a> is compatible with this Omega Constellation. Quality aftermarket straps, such as those crafted with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> or in <a href="/pages/termine-glossario/alligatore">alligator</a> leather, offer greater aesthetic versatility than the original integrated Manhattan bracelet. Ensure your chosen strap features lugs (keeper slots) slightly narrower than 16mm to accommodate the case lugs without play.

How long does a natural leather strap last on a watch like the Constellation?

A high-quality leather strap crafted with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> or <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> typically lasts 3–5 years with regular wear, developing a distinctive patina over time. Longevity depends on sun exposure, humidity, and frequency of wear. Alligator or premium calf straps may last even longer. The Casati Milano atelier guarantees 18 months on custom-crafted straps.

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