Strap for Speedmaster Racing Co-Axial Chronograph Stainless Steel / Silver-Yellow / Rubber

The lug width is 20mm. This is the distance between the lug attachment points on the case. This dimension is determined by the case geometry and is specific to this model. Always verify the measurement before ordering a strap to ensure a perfect fit.

The ideal materials are: alligator for classic elegance (cognac, dark brown), textured calf leather for sporty durability, shell cordovan for longevity and brilliance, vegetable-tanned leather for natural patina development over time, and NATO nylon straps for water or daily wear contexts. The choice depends on intended use and desired aesthetic tone.

The strap is changed by removing the two spring bars that connect the strap to the case lugs. Use a dedicated tool to compress the internal spring of the bar and extract it gently. Insert the new strap by aligning the holes with the lugs, then reinsert the bars. If you lack experience, entrust the work to a professional watchmaker to avoid damage.

Yes, any strap with a 20mm lug width is mechanically compatible. However, aesthetic compatibility depends on the strap's thickness, height, and design. Artisanal quality straps, crafted with premium leathers and tailored workmanship, guarantee superior fit compared to standard models, further enhancing the Omega chronograph.

Longevity depends on material and usage. A quality vegetable-tanned or alligator leather strap, properly maintained, lasts 5-7 years under daily wear conditions. Shell cordovan can exceed 10 years. Regular rotation between multiple straps, avoidance of prolonged moisture, and periodic cleaning with specialized products significantly extend durability. Atelier Casati Milano provides an 18-month warranty on bespoke straps.