Strap for Speedmaster Co-Axial 38 Yellow Gold / Diamond / Silver / Strap

The lug width is exactly 18 millimetres. This parameter indicates the distance between the lugs (the small tabs on the case where the strap is attached). It is essential to verify compatibility before purchase, as an incorrect strap may not fit properly or could damage the case.

For a 38mm yellow gold Omega Speedmaster we recommend alligator in cognac or terracotta tones, which emphasises the warmth of the gold and offers aesthetic evolution over time thanks to vegetable tanning. Dark Italian calf is ideal for those who prefer discretion, while burgundy shell cordovan creates a sophisticated contrast. FKM rubber remains perfect for sports contexts without compromising elegance.

Strap replacement requires a specific tool called a spring bar tool. Gently insert the flat tip of the tool under the spring of the lug, applying light pressure to release it. Once freed, the lug retracts and allows you to remove the old strap. Insert the new strap by aligning the holes to the lugs and let the spring close naturally. If you prefer to avoid the risk of scratching the case, entrust the work to a professional watchmaker.

Yes, provided the lug width is certified at 18mm. On MilanoStraps you will find a collection of artisanal straps compatible with this size, customisable in leather, colour and stitching thread. All our straps are designed to offer construction quality comparable to genuine Omega straps, with the advantage of expanded aesthetic choice and an 18-month warranty through the Casati Milano atelier.

A premium vegetable-tanned leather strap (such as the artisanal ones from MilanoStraps) maintains functionality and appearance for 2-4 years of regular wear, with the possibility of extension to 5-6 years with proper maintenance. Durability depends on sun exposure, humidity and frequency of wear. The natural ageing of leather is a virtue, not a defect: the patina that forms imparts character. Shell cordovan straps tend to last longer thanks to the greater density of the fibre.