Omega
Speedmaster (Non-Moonwatch) 3613.30.02— lug 18mm

The lug width of the Omega Speedmaster 3613.30.02 is exactly 18 millimetres. This is the distance between the two attachment points of the strap on the case. It is essential to verify this measurement to ensure proper compatibility of any aftermarket strap.

For a yellow gold Speedmaster (reference 3613.30.02), alligator represents the most balanced choice: the fine grain texture of alligator creates chromatic harmony with the gold without competing visually. For alternative solutions, calf leather in neutral tones (grey, light brown) or shell cordovan offer versatility while maintaining the aesthetic authority of the watch.

The strap is changed by removing the spring bars from the case attachment. These metal bars pass through the grooves of the case and strap. Using a dedicated tool (spring bar tool), compress the internal spring of the bar, extract it from one side, and release the strap. For reassembly, insert the new strap, position the spring bars in the attachments, and let them extend until they click into place.

Yes, absolutely. Any strap with an 18mm lug width is compatible with the 3613.30.02. Milano Straps offers a complete collection of customisable artisanal straps in this size, available in alligator, calf leather, shell cordovan and synthetic materials, with customisation options and 18-month warranty through the Casati Milano atelier.

The lifespan of a leather strap depends on usage, tanning method and maintenance. A high-quality alligator or shell cordovan strap, worn daily, has an average life of 3-5 years before requiring replacement. Vegetable-tanned leathers age more elegantly and can last beyond 5 years if treated with care. Rubber has similar durability but degrades through mechanical wear and UV exposure, not through tears like leather.