Omega · Constellation
Strap for Constellation Co-Axial 27 Brushed Stainless Steel / Yellow Gold Claws / MOP
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 123.20.27.20.55.005 (aka: 12320272055005)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Constellation 123.20.27.20.55.005 (aka: 12320272055005), seen from the bench
Frequently asked questions
What is the correct lug width for the Omega Constellation 123.20.27.20.55.005?
The lug width of the Constellation 123.20.27.20.55.005 is 20mm. You can verify it by measuring the internal distance between the two pins where the strap attaches. This dimension is specific to this elegant feminine model of the collection and allows for a wide choice of compatible artisanal straps.
Which strap material pairs best with the Constellation 123.20.27.20.55.005 in gold and steel?
Genuine alligator represents the most natural pairing for its elegant profile: the regular grain dialogues perfectly with the classical geometry of the lugs. Alternatively, vegetable-tanned calf develops beautifully over time, or shell cordovan for a rich and luminous texture that amplifies the reflections of the mother-of-pearl dial.
How do I change the strap on this Omega?
The Omega Constellation 123.20.27.20.55.005 features removable spring bars. With the help of a specific tool or at a watchmaker's, you can gently remove the pins from the lugs, detach the old strap and attach the new one. If you are not experienced, we recommend contacting a specialized atelier such as Casati Milano to ensure precision and protection of the case.
Which aftermarket straps are compatible with the Constellation 123.20.27.20.55.005?
All straps made with 20mm lug width are compatible. On milanostraps.it you will find a complete selection of artisanal straps in alligator, calf, shell cordovan and rubber, customizable in exact sizes and details such as initials and stitching type, ready for shipment.
How long does a natural leather strap last on a watch worn daily?
Durability depends on the quality of the tanning, usage and maintenance. An artisanal strap in vegetable-tanned calf or alligator lasts on average 3-5 years of daily wear, developing a fascinating natural patina. Shell cordovan, thanks to its fibrous structure, has superior longevity (5-7 years). Casati Milano offers an 18-month warranty on all custom-made straps.
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

