Strap for Constellation Quartz 27.5 Stainless Steel / Yellow Gold / Diamond / MOP

The lug width is 20mm. This dimension is specific to the Constellation women's and historical models of medium proportions. To verify compatibility, position a digital caliper between the lug shoulders: it should read exactly 20mm with no margin of error.

It depends on use and wrist size. For formal elegance: dark brown alligator, vegetable-tanned calf, or burgundy shell cordovan maintain the balance of the two-tone case design. For casual versatility: pearl grey NATO or light grey rubber. The key is choosing a leather or material that doesn't compete with the mother-of-pearl dial for luminosity.

You have two options: DIY strap change with a specialized tool (lug bar or spring bar tool), which requires care not to scratch the two-tone case, or entrust it to a professional. The Casati Milano atelier offers free strap replacement if purchased through them, with complete case inspection during the operation.

Yes. Any strap with a 20mm lug width is compatible. You'll find standard straps online from specialized brands, but to maintain Omega's quality standards we recommend artisanal straps with premium leathers: alligator, Italian calf, or shell cordovan that age gracefully, enhancing the watch over time.

A premium alligator strap lasts 5-7 years with daily wear; calf leather 3-5 years; shell cordovan 6-8 years thanks to the greater density of the leather. Durability depends on humidity, sun exposure, and frequency of use. The Casati Milano atelier guarantees 18 months on all handcrafted straps, with the possibility of maintenance and controlled aging.