Strap for Aquaracer 300M Quartz 43 Stainless Steel / Black / Bracelet

The lug width is 20mm. This dimension represents the internal distance between the two spring bars of the case. To verify it, use a calliper and measure perpendicular to the watch's axis: you will obtain exactly 20mm. This measurement is essential for selecting the correct aftermarket strap, as straps of 18mm or 22mm will not be compatible with the original lugs.

The choice depends on the intended use and aesthetic preferences. Mississippi alligator with medium-fine grain (1.8–2.2mm thickness) offers the best balance between robustness and sporty elegance, harmonising perfectly with the 43mm case mass. Dark brown alligator enhances the steel and rose gold of the dial. For intense aquatic applications, an FKM (Viton) rubber strap guarantees chemical resistance to marine agents. Vegetable-tanned calf represents a versatile and time-resistant solution, developing a beautiful natural patina within the first months of wear.

The procedure requires a stable work surface and specific tools: a spring bar tool with fine tip, a magnifying glass, and a soft surface (microfibre cloth). Position the watch vertically with the case facing upwards. Insert the tool's tip into the groove of the lower spring bar, press upwards to free the attachment from the seat, and slide out the old strap. Repeat for the other end. Insert the new strap's spring bar into the lugs, ensuring both ends are perfectly seated. If you are unfamiliar with this operation, entrust the task to a professional watchmaker.

Yes, absolutely. Any strap designed for 20mm lug width is compatible with the WAY101A.BA0746. Milano Straps offers a selection of bespoke leather straps (alligator, calf, shell cordovan), NATO canvas and rubber. Each aftermarket strap provides the opportunity to express stylistic versatility compared to the integrated metal bracelet, allowing colour and material variations suited to different usage contexts. Personalisation is available for sizing, initials and stitching thread colour.

Durability depends on the material and intensity of wear. An alligator strap of 1.8–2.2mm thickness, worn daily, offers an average lifespan of 5–7 years before replacement becomes necessary due to natural leather wear and thread deterioration. Vegetable-tanned calf has comparable longevity (5–6 years) with the advantage of developing a pleasant aesthetic patina over time. Thicker alligator (over 2.2mm) will extend the lifespan by one or two years. Shell cordovan, due to its structural characteristics, can reach 8–10 years. FKM (Viton) rubber offers the greatest durability (8–10 years) but without the aesthetic patina of leather. Proper maintenance (periodic cleaning, drying after water contact, protection from direct heat sources) significantly extends the life of any leather strap.