Strap for Constellation Automatic 35.5 Stainless Steel / Yellow Gold / Champagne

The Omega Constellation 1302.10.00 requires watch straps with a lug width of 20 millimetres. This dimension is measured internally between the two lugs of the case. Verify it by inserting a ruler into the slot between the lugs: the distance from the inner point of one lug to the inner point of the other must be exactly 20mm. Any variation, however minimal, compromises the correct insertion of the strap.

For a two-tone Constellation in yellow gold and steel, the best materials are alligator in medium brown or cognac tones, which dialogue elegantly with the gold without competing visually, and vegetable-tanned calf leather that develops patina over time. Opaque black alligator offers a refined contrast while maintaining the formal aesthetic of the two-tone watch. Avoid NATO fabrics or rubber, which clash with the watch's aesthetic language.

The strap is changed via the attachment pins (spring bars) that connect the lugs of the case. Use a specific tool (spring bar tool) to push the small metal pin inward, creating the space necessary to remove the old strap and insert a new one. It is advisable to seek help from a watchmaker if you lack experience, to avoid scratching the case or damaging the attachment points.

All straps with a lug width of 20 millimetres are compatible with the Constellation 1302.10.00. You can choose between alligator, calf, shell cordovan, crocodile or nubuck leather, provided the width is certified at 20mm. Online you'll find <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-20mm">20mm straps ready for shipping</a>, customisable in colour and thread stitching. The Casati Milano atelier also creates bespoke straps to measure with personal consultation.

The lifespan of a leather strap depends on the quality of the material, use and maintenance. A high-quality artisanal alligator or shell cordovan strap lasts 3-5 years with regular use, thanks to the density and robustness of the leather. Calf, while appealing for its patina development, can last 2-4 years. To extend its life, avoid prolonged exposure to moisture, do not bend the strap excessively and clean it regularly with a soft cloth. Casati Milano provides an 18-month warranty on all custom-made straps.