Strap for Speedmaster Broad Arrow Co-Axial GMT Stainless Steel / White / Bracelet

The lug width of the Broad Arrow 3581.30.00 is 21 mm. This measurement represents the distance between the articulation pins where the strap sits on the case. It is important to verify this dimension with a millimeter ruler positioned directly between the two pins to ensure compatibility with any aftermarket strap.

The ideal material depends on the intended use and desired aesthetics. A dark gray or chocolate brown alligator offers elegance and noble patina. Vegetable-tanned calf leather provides organic warmth and fascinating aging. For those prioritizing practicality and sportiness, a NATO strap in cotton-polyester or FKM rubber represent legitimate choices. A steel deployant clasp reinforces the sensation of solidity with defined click closures.

To change the strap you will need: a spring bar tool (thin lever instrument), a stable surface and natural light. Position the watch on a soft cloth. Insert the tip of the tool into the hole of the retention spring under the lug, gently lift until the spring retracts, then remove the pin. Repeat on the other side. Proceed in reverse sequence with the new strap, ensuring that the pins position themselves straight without forcing.

No, the 21 mm lug width is specific to certain Omega models. The Broad Arrow 3581.30.00 is the most celebrated example, but other Omega chronographs or tool watches may share this width. Always verify the lug width before purchasing an aftermarket strap by consulting the instruction manual or contacting the strap manufacturer directly.

The lifespan of a leather strap depends on intensity of use, climatic conditions and leather quality. On average, a high-quality artisanal alligator or calf strap has a life of 3-5 years before requiring maintenance or replacement. Repeated exposure to water, sweat and UV rays accelerates wear. Casati Milano straps come with an 18-month warranty and can be regenerated through the atelier service.