Strap for Constellation Quartz 27 Polished Yellow Gold / Diamond / MOP Supernova

The lug width of the Constellation 123.55.27.60.55.007 is exactly 20mm, measured from center pin to center pin. This dimension is standard for Omega ladies' models of this generation and allows the use of any compatible 20mm strap.

For the Constellation 123.55.27.60.55.007 in yellow gold, cognac brown alligator represents the most elegant choice, as the geometric grain of the leather enhances the warm tone of the gold without competing. Alternatively, vegetable-tanned calf offers a natural patina that ages beautifully over time.

Strap replacement requires the use of a specific tool (spring bar tool): insert the tip into the small groove under the pin, press gently to release the spring, and the pin will slide out from the case. Repeat the operation at the other end. For leather straps, ensure that the 20mm lug width is respected before proceeding.

Yes, any strap with a 20mm lug width is compatible with the Constellation 123.55.27.60.55.007. Before purchasing, verify that the strap is specifically designed for 20mm lugs, as this is the only critical variable for proper fitting.

The lifespan depends on the material and construction quality. A high-quality alligator or shell cordovan strap, such as those from Casati Milano, maintains structural integrity for 3-5 years with daily wear. Vegetable-tanned calf ages more quickly aesthetically but remains functional. Replacement is recommended when the leather begins to show cracks in the keepers or when the buckle starts to lose its grip.