Omega · Constellation

Strap for Constellation Quartz 27 Brushed Stainless Steel / Red Gold / Brown Feather

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

Lug width18 mm
Case diameter27 mm
Reference123.20.27.60.63.003 (aka: 12320276063003)
FamilyConstellation
MovementOmega caliber 1376 Hours, Minutes
CaseRed 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 →

The Constellation 123.20.27.60.63.003 (aka: 12320276063003), seen from the bench

The Omega Constellation 123.20.27.60.63.003 is a 27mm women's watch combining 18-carat red gold and stainless steel in a two-tone design. It features the Omega 1376 quartz caliber, accurate to ±15 seconds per month, and is part of the Constellation collection founded in 1952. The case has a lug width of 18mm and includes the iconic four-pointed star bezels characteristic of the Constellation line.

Frequently asked questions

What is the lug width of the Omega Constellation 123.20.27.60.63.003?

The lug width of the Constellation 123.20.27.60.63.003 is 18mm. This width is specific to this 27mm ladies' model and is essential for choosing a compatible strap. To measure the lug width correctly, use a digital caliper positioned perpendicularly between the two lugs of the case, excluding any decorative protrusions. An 18mm strap will fit perfectly while maintaining the original proportions of the case.

Which strap material is most suitable for the Omega Constellation 123.20.27.60.63.003?

For the bi-metallic Constellation in rose gold and steel, alligator remains the most elegant choice, especially in cognac, havana, or anthracite black tones. Calf leather offers a good alternative with a patina that develops over time, creating unique character. For more sporty and casual wear, NATO or vulcanized rubber allow greater versatility. Your choice depends on the intended use and your personal style.

How do you change the strap on an Omega Constellation?

To change the strap, you need a dedicated tool called a spring bar remover. Remove the watch from your wrist and position it case-side up. Insert the tip of the tool under one of the small springs (spring bars) that secure the strap to the lugs, applying gentle inward pressure to compress the spring. Once compressed, the strap will detach. Repeat the operation on the other side. To install the new strap, align the lugs and press gently until the springs lock into position. If you prefer, the Casati Milano atelier offers this service free of charge for strap purchases.

Can I use an aftermarket strap on an Omega Constellation 123.20.27.60.63.003?

Yes, you can use aftermarket straps compatible with an 18mm lug width. Compatibility is guaranteed by the lug width, not by the strap brand. Milano Straps offers a complete range of artisanal leather straps, alligator, calf, and rubber, all customizable and compatible with this model. The quality of a fine leather artisanal strap can further enhance the elegance of the bi-metallic, creating a more sophisticated result than the original bracelet.

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

The lifespan of a leather strap depends on the quality of the material, frequency of use, and environmental conditions. A high-quality alligator or calf strap, with appropriate vegetable tanning, typically lasts 4-7 years with regular use. Prolonged exposure to moisture, sweat, and UV rays accelerates leather aging. To extend the lifespan, it is advisable to rotate multiple straps and store the strap in a dry place when not worn. Milano Straps straps include an 18-month warranty and can be refurbished or replaced at the Casati Milano 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