Omega · Constellation
Strap for Constellation Quartz 24 Stainless Steel / Red Gold / Pink MOP
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Constellation 123.20.24.60.57.003 (aka: 12320246057003), seen from the bench
Frequently asked questions
What is the exact lug width of the Omega Constellation 123.20.24.60.57.003?
The lug width is 18 millimetres. It is measured by positioning a digital calliper perpendicularly between the two case lugs. This thickness is standard for Constellation models in reduced sizes and requires specific 18mm straps to avoid inconsistent lugs.
Which strap is most suitable for the Constellation 123.20.24.60.57.003?
Natural cognac-coloured alligator offers maximum harmony with the bi-colour rose gold/steel case, creating chromatic continuity without visual excess. For formality, black or dark brown calf. For everyday versatility, aged shell cordovan delivers multi-year durability and evolving patina over time.
How do I change the strap on my Omega Constellation 24mm?
Obtain a spring bar remover tool. Position the watch with the lug facing upward. Insert the tip of the remover into the hole beneath the lug, apply light downward pressure to release the pin. Remove the pin with your fingers. Repeat from the opposite side. Install the new strap by reversing the process, ensuring the pins enter firmly into the holes.
Is an aftermarket strap compatible with ref. 123.20.24.60.57.003?
Yes, provided it is certified for 18mm lug width. Avoid generic universal straps—the lug width requires lugs (the lateral holes) precisely spaced at 18 millimetres. Handcrafted straps from specialised manufacturers guarantee correct tolerances and compliant assembly.
How long does a leather strap last on an Omega Constellation?
With <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a>, a quality strap (alligator, calf, shell cordovan) lasts 3–5 years under normal conditions. Natural ageing creates desirable patina. Frequent exposure to intense humidity or perspiration accelerates deterioration. Regular care—drying after water exposure, application of protective balm semi-annually—extends longevity beyond 5 years.
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

