Strap for Aquaracer 300M Calibre 5 43 Stainless Steel / Grey / Strap

The lug width of the WAY201M.FC6474 is 20mm, determined by the width of the case lugs. This dimension is standard amongst mid-to-large Aquaracer models and allows compatibility with a wide range of artisanal and industrial straps. To verify precisely, use a digital calliper positioned perpendicularly between the two inner lugs.

For the WAY201M.FC6474, we recommend a matte alligator in black or dark brown, which maintains the case's sporty identity whilst emphasising technical details. Alternatively, vegetable-tanned calf leather offers natural patina over time. For intensive daily use, an anti-shock rubber strap guarantees practicality without compromising instrumental aesthetics. The choice depends on intended use and wearing context.

To change the strap, remove the watch from your wrist and position it on a soft surface with the case facing downwards. Use a springbar tool to compress the elastic pins (springbars) that hold the strap in the lugs. Once the old strap is removed, insert the new one by aligning the buckle or keeper holes with the pins, then release the tool to secure the strap. Ensure the strap is perfectly parallel to the case.

Yes, the WAY201M.FC6474 is perfectly compatible with quality aftermarket straps, provided they are made with 20mm lug width. Artisanal straps from online retailers and Casati Milano are specifically constructed for this measurement and guarantee precise fit on the case pins. We always recommend verifying compatibility with the manufacturer before purchase, especially for models with particular configurations.

The lifespan of a leather strap depends on usage and tanning quality. A high-quality alligator or calf leather strap has an average longevity of 3–5 years with daily wear, extendable to 7–10 years with occasional wear and proper maintenance. Vegetable-tanned leather ages naturally, developing patina. Excessive moisture and direct sunlight exposure shorten lifespan. Casati Milano offers 18-month warranty on all straps and regeneration services to extend product life.