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Omega · Constellation

Strap for Constellation Co-Axial 27 Brushed Stainless Steel / Diamond / Wavy 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 diameter27 mm
Reference123.15.27.20.55.002 (aka: 12315272055002)
FamilyConstellation
MovementOmega caliber 8520 Hours, Minutes, Seconds | Date | Chronometer, Co-Axial Escapement
CaseStainless 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 123.15.27.20.55.002 (aka: 12315272055002)

Selected for the 16 mm lug width

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The Constellation 123.15.27.20.55.002 (aka: 12315272055002), seen from the bench

The Omega Constellation reference 123.15.27.20.55.002 is equipped with the automatic caliber 8520 with Co-Axial escapement and chronometer certification. The movement offers indication of hours, minutes, seconds and date. The watch utilizes Omega's Co-Axial technology developed to reduce friction and improve long-term accuracy.

Frequently asked questions

What is the lug width of the Omega Constellation 123.15.27.20.55.002?

The Omega Constellation 123.15.27.20.55.002 has a lug width of 16mm. This measurement represents the distance between the centers of the case spring bars. It is important to verify this specification when purchasing a replacement strap to ensure perfect compatibility.

What is the best strap for the Omega Constellation 123.15.27.20.55.002?

For this 27mm model we recommend cognac brown or black alligator for classic elegance, or natural calfskin for a patina that ages over time. Shell cordovan is ideal for those seeking durability and natural shine. The choice depends on daily or formal use and personal preference for color evolution.

How do you change the strap on the Constellation 123.15.27.20.55.002?

The strap is changed by removing the case spring bars using a dedicated tool (spring bar tool). Position the two bars parallel to each other, compress the internal spring and slide the bar outward. Insert the new strap by aligning the holes with the bars, then reinsert the bars into the opposite notch. Milano Straps provides detailed instructions with every order.

Which aftermarket straps are compatible with the Constellation 123.15.27.20.55.002?

All 16mm artisanal quality straps are compatible with this model. On Milano Straps you will find straps in alligator, calfskin, shell cordovan and other materials, all available in customizable sizes and with buckle options (pin buckle, deployant) suited to your preferences.

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

A quality leather strap, with proper maintenance, lasts 3-5 years with daily use. Longevity depends on the tanning method (vegetable tanned ages more slowly), the material (alligator is more durable than calfskin), and contact with water. Milano Straps offers an 18-month warranty on all artisanal straps handcrafted in the atelier.

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