Omega · Constellation
Strap for Constellation Co-Axial 31 White Gold / Snow / Diamond Supernova
Takes 14 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Constellation 123.55.31.20.55.011 (aka: 12355312055011), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 123.55.31.20.55.011?
The lug width measures 14mm. This width is proportioned to the 31mm case diameter and was calculated by Omega to maintain aesthetic balance between the white gold case profile and the wrist. Measuring the lug width correctly with a digital caliper between the internal attachments (from the shoulders) is essential for selecting a compatible strap.
What is the best strap for this Omega Constellation model?
Natural or aniline alligator represents the traditional choice for the Constellation 123.55.31.20.55.011, thanks to its ability to develop patina over time and create visual harmony with white gold. Shell cordovan is an excellent alternative for those preferring a compact texture and greater luminosity. Taurillon calf with vegetable tanning is ideal for less formal occasions, offering a broad color palette.
How to change the strap on this Omega Constellation?
The Constellation 123.55.31.20.55.011 is equipped with lugs integrated into the white gold case. To remove the original bracelet, a specific tool (spring bar remover) is required, along with great care to avoid scratching the white gold. We recommend having the operation performed by a specialized watchmaker or directly at the Casati Milano atelier, which possesses the expertise and tools to preserve the case integrity.
Which aftermarket straps are compatible with the 123.55.31.20.55.011?
All straps with 14mm lug width are compatible with the Constellation. On milanostraps.it you will find a curated selection of straps in alligator, shell cordovan, calf and other fine leathers, customizable in sizes, initials and stitching thread. It is recommended to choose noble materials (not synthetic) to respect the luxury context of the white gold case.
How long does a leather strap last on a watch like the Constellation?
A fine leather strap (alligator, shell cordovan, calf with vegetable tanning) has an average lifespan of 4-6 years with moderate daily use. Longevity depends on sun exposure, humidity and frequency of use. Bespoke straps created by Casati Milano benefit from an 18-month warranty and can be regenerated through restitching and leather revitalization, significantly extending their lifespan.
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
