Strap for Speedmaster Co-Axial 38 Stainless Steel / Sedna Gold / Cappuccino

The Omega Speedmaster 38mm (ref. 324.23.38.50.02.002) is equipped with 18mm lugs. This measurement represents the standard for mid-sized sports watches and ensures balanced proportions on the 38mm case. To verify the compatibility of an aftermarket strap, measure the distance between the two spring bars that connect the strap to the lugs: it must be exactly 18mm.

For the 324.23.38.50.02.002 in Sedna Gold and stainless steel, we recommend vegetable-tanned alligator in natural dark brown or aged burgundy tones. Shell cordovan is a refined alternative, particularly in oxblood tone. Both materials develop a patina over time that elegantly complements the rose gold of the case. Avoid overly light or artificial shades that would compete with the two-tone nature of the case.

The strap is secured by two spring bars located in the case lugs. Use a dedicated tool (spring bar tool) or a small flathead screwdriver to gently press the bar from one side, thereby releasing the original strap. Insert the new strap by aligning the lateral holes with the spring bars, then release the pressure. Verify that the strap is firmly secured on both sides before wearing the watch.

Yes, provided the lug width is exactly 18mm. MilanoStraps offers a complete collection of 18mm compatible straps, customizable in leather, material, color, and even length. Aftermarket straps allow you to modify the watch's aesthetics without compromising its functionality. Atelier Casati Milano also creates custom straps with personal consultation and 18-month warranty.

A quality leather strap (alligator, shell cordovan, or vegetable-tanned calf) subjected to daily use typically lasts 3-5 years before requiring replacement, depending on intensity of use and care. Exposure to sweat, moisture, and sunlight accelerates aging. With proper maintenance—periodic cleaning and conditioning—lifespan can be extended. MilanoStraps provides straps with certified durability and convenient replacement options.