Omega · Constellation
Strap for Constellation Quartz 27 Polished Stainless Steel / Red Gold / Brown Supernova
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Constellation 123.20.27.60.63.002 (aka: 12320276063002)
Selected for the 18 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Constellation 123.20.27.60.63.002 (aka: 12320276063002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 123.20.27.60.63.002?
The lug width is 18mm. It is measured from the inner point of the left lug to the inner point of the right lug, passing under the case back. This measurement is critical for strap compatibility: an error of 1mm results in excessive play or impossibility of fitting. Always verify this dimension before ordering.
Which strap is best suited for the Constellation 123.20.27.60.63.002?
For its refined elegance and compact proportions (27mm), we recommend quality alligator for formal occasions or mother-of-pearl calf for daily wear. Alligator respects the sophistication of the Constellation and develops a rich patina. Calf ages softly and breathes better. For summer or sports, a NATO in fine canvas or FKM rubber offers practicality without aesthetic compromise.
How to change the strap on an Omega Constellation?
The Omega Constellation 123.20.27.60.63.002 requires specific tools: a spring bar tool (lever for the lug closing springs). Position the watch upside down on a soft surface, locate the two tension springs lateral inside the lug, gently press with the lever to retract them, remove the original strap, and insert the new strap by snapping the springs into position. If unsure, consult a professional watchmaker.
Can I use an aftermarket strap on this Omega Constellation?
Yes, provided it has a lug width of 18mm. Aftermarket straps must strictly comply with this measurement to ensure compatibility and safety. Specialized brands like Milano Straps offer artisanal leather straps in premium materials, customizable, that guarantee construction quality equivalent to original Omega straps, sometimes with even more noble materials.
How long does a leather strap last on a watch like the Constellation?
A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) lasts 3-5 years with average daily use, up to 7-10 years if rotated seasonally or worn occasionally. Durability depends on: frequency of use, exposure to sun and humidity, wrist perspiration, and maintenance (regular drying, light balm treatments). A well-maintained vintage strap can last even more than a decade.
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

