Omega · Constellation
Strap for Constellation Quartz 22.5 Stainless Steel / Red Gold / Diamond / MOP / 160 Years
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Constellation 111.25.23.60.55.003 (aka: 11125236055003)
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 111.25.23.60.55.003 (aka: 11125236055003), seen from the bench
Frequently asked questions
What is the lug width of the Omega Constellation 111.25.23.60.55.003?
The lug width is 20 mm, measured between the horizontal pins of the case. This dimension is standard for this ladies' model and ensures compatibility with all 20 mm straps available in the catalog.
Which strap material pairs best with the Omega Constellation 111.25.23.60.55.003?
Alligator represents the most sophisticated choice, with a natural texture that enhances the rose gold case. Alternatively, vegetable-tanned calf leather offers exceptional durability and develops a rich patina over time. For everyday wear, smooth calf leather in cognac or dark brown tones creates harmony without visual excess.
How do you change the strap on this Omega watch?
Use a springbar tool to gently remove the pins (springbars) that connect the strap to the case. Position the tool in the lateral slot of the pin and press inward until the end retracts. The pin will come out of the case. Repeat on the opposite side. To install the new strap, reinsert the pins following the reverse path, ensuring that the terminals lock correctly into the case seats.
Can I use an aftermarket strap on an Omega Constellation 111.25.23.60.55.003?
Yes, provided the strap has a 20 mm lug width. Artisanal straps in alligator, vegetable-tanned calf, or shell cordovan are perfectly compatible and often offer superior construction quality to original models. Always verify that the strap terminals are proportioned to the lug width to avoid mechanical play.
What is the average lifespan of a leather strap for this watch?
A quality leather strap, with vegetable tanning or alligator, lasts 2-3 years with moderate daily use. Durability depends on water exposure, body perspiration, and frequency of use. A shell cordovan strap, thanks to superior molecular density, can last 4-5 years. Regular maintenance (cleaning and drying after humidity exposure) significantly extends service life.
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

