Omega · Constellation
Strap for Constellation Quartz 27 Brushed Stainless Steel / Tahiti 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 123.10.27.60.57.003 (aka: 12310276057003), seen from the bench
Frequently asked questions
What is the lug width of my Omega Constellation 123.10.27.60.57.003?
The lug width is 18mm. This international standard represents the norm for compact wristwatches. Verify by measuring directly the distance between the case attachment pins: it must correspond to 18mm to ensure compatibility with any aftermarket strap.
Which strap material is best for the 27mm Constellation?
For formal dress watch wear, alligator represents the most sophisticated solution thanks to its natural texture and resistance over time. Alternatively, shell cordovan offers evolved patina, while vegetable-tanned calf leather guarantees daily softness. For summer versatility, NATO fabric allows chromatic customizations without aesthetic compromises.
How do I change the strap on the Constellation 123.10.27.60.57.003?
The system is based on standard spring bars: use a small flathead screwdriver to push the attachment pin from one side to the other of the case. Position the pin in the hole, push gently until the other spring bar, then withdraw the screwdriver. The operation takes just a few seconds without specialized tools.
Can I use aftermarket straps compatible with the Constellation?
Yes, any strap with 18mm lug width is geometrically compatible. However, we recommend verifying the thickness and spring bar configuration to ensure smooth insertion into the pins. The artisanal straps from Milano Straps have been tested on this model to guarantee optimal fit.
How long does a leather strap last on a watch worn daily?
A quality leather strap, with vegetable tanning and Goodyear welted construction, lasts 3-5 years with daily use and regular maintenance. Alligator and shell cordovan last longer thanks to structural density. Our 18-month warranty covers construction defects; natural wear, including patina development, is considered an aesthetic characteristic.
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

