Omega · Constellation
Strap for Constellation Co-Axial 35 Stainless Steel / Silver Omega
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Recommended spring bar
Straps for the Constellation 123.10.35.20.52.002 (aka: 12310352052002)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Constellation 123.10.35.20.52.002 (aka: 12310352052002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 123.10.35.20.52.002?
The lug width of the Constellation 123.10.35.20.52.002 is 20 millimetres. This dimension is specific to the model and is determined by the proportion between the case diameter (35mm) and the spring bar attachment. Any aftermarket strap must have exactly 20mm lug width to fit correctly without aesthetic compromise.
Which strap is best suited to the Constellation 123.10.35.20.52.002?
Vegetable-tanned alligator is the natural choice: the geometric texture of the leather reflects the constructive rationality of the case. For formal elegance, polished black calf or Havana brown. For versatile approaches, structured NATO or cordovan. The choice depends on the context of use: the Constellation in this size expresses itself best with materials that maintain visual proportion, avoiding bulky straps.
How do I correctly measure the lug width of my Constellation?
Position a ruler or digital calliper between the two spring bar attachment points, aiming the measurement at the centre of each attachment. The value you read is the lug width. For the Constellation 123.10.35.20.52.002 it must be 20mm. Avoid measuring the width of the original bracelet: this is a different measurement and does not correspond to the technical specification of the attachment.
Is a 20mm lug width aftermarket strap compatible with the Omega Constellation 123.10.35.20.52.002?
Yes, any artisanal strap with 20mm lug width is compatible from a mechanical standpoint. The Constellation's spring bar is standard and requires no modifications. Strap changing is performed with a simple spring bar tool. For aesthetic choice, favour materials that maintain the elegant and proportionate character of the watch, without overwhelming it.
How long does a leather strap on a Constellation worn daily last?
A high-quality leather strap (alligator, cordovan, premium calf) typically lasts 4-8 years of daily use, depending on sun exposure, environmental humidity and cleaning frequency. Vegetable tanning ages better and develops a desirable patina; industrial tanneries have a shorter lifespan. An artisanal strap made with premium leather and hand stitching maintains structure and functionality longer than industrial alternatives. Casati Milano's 18-month warranty covers manufacturing and material defects.
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