Omega · Constellation
Strap for Constellation Co‑Axial Master Chronometer 27 Small Seconds Stainless Steel / Red Gold / Diamond / MOP
Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Constellation 127.25.27.20.55.001 (aka: 12725272055001), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 127.25.27.20.55.001?
The lug width of this model is 17mm. This is the distance measured internally between the two case lugs. It is essential to verify this specification before purchasing an aftermarket strap to ensure perfect compatibility and avoid lateral play.
Which strap is best for the Omega Constellation 127.25.27.20.55.001?
It depends on your use: for classic elegance, brown or cognac alligator complements the rose gold case. Vegetable-tanned calf in dark tones offers distinctive aging. FKM rubber is ideal for everyday versatility while maintaining precision and reliability. The best color is one that echoes the warm tones of the case.
How do I change the strap on my Omega Constellation 127.25.27.20.55.001?
The strap is replaced using a spring bar tool to extract the elastic pins that secure the strap to the case lugs. Gently unscrew the pin, slide off the old strap, and insert the new one in the same position. The operation requires care to avoid scratching the rose gold case.
Can I use an aftermarket strap on this Constellation?
Yes, provided it has the correct 17mm lug width. Many high-quality artisan straps are compatible and offer elegant alternatives to the integrated bracelet. On milanostraps.it you will find 17mm straps customizable in leathers, finishes, and initials, with the guarantee of construction precision.
How long does a leather strap last on a daily-wear watch like this Constellation?
A quality alligator or calf strap, with moderate daily use, lasts an average of 3-5 years before requiring replacement. Durability depends on environmental humidity, sun exposure, and frequency of use. A shell cordovan strap can last 7-10 years. Proper maintenance—drying the strap after bathing and treating it with specific balms—significantly extends its useful 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