Strap for Aquaracer 300M Calibre 5 40.5 Stainless Steel / Silver / Bracelet

The lug width of the TAG Heuer Aquaracer WAY2111.BA0910 is 20 millimetres. This measurement is determined by the case section and the distance between the attachment pins. To verify, simply remove the original bracelet and measure the space between the lugs, or consult TAG Heuer's official technical specifications. A 20mm strap ensures proper aesthetic and functional alignment with the 40.50mm case.

The choice depends on intended use and desired aesthetics. For nautical elegance, we recommend Nile alligator with vegetable tanning, which enhances the model's sophisticated sportiness. For daily versatility, spatulate calf maintains a balance between refinement and casualness. Shell Cordovan offers natural ageing and unique patina development over time. For wet environments or aquatic activities, NATO canvas or vulcanised rubber straps are indestructible. Every choice must respect the visual proportions between lug and strap to maintain the architectural balance of the case.

The WAY2111.BA0910 features spring bars that secure the bracelet to the case. To remove it, use a spring bar tool to compress the lateral pins and free the lug from the case. Alternatively, it is advisable to consult a professional watchmaker who will perform the operation without risk of scratches. Once the original bracelet is removed, the new strap can be inserted by aligning the lugs with the case holes. This operation requires care to preserve the case's stainless steel finish.

Absolutely. The TAG Heuer Aquaracer WAY2111.BA0910 is compatible with aftermarket 20mm straps made by specialised craftsmen. Milano Straps offers customisable straps in leather (alligator, calf, shell cordovan), NATO canvas and vulcanised rubber, all designed to respect the case's aesthetic proportions. Using high-quality aftermarket straps does not compromise watch functionality or void the warranty, provided the change is executed correctly. We recommend choosing suppliers who understand the technical and visual specifics of sports watches.

The lifespan of a leather strap depends on the material, frequency of use and maintenance. High-quality vegetable-tanned alligator lasts 2-4 years with daily wear, thanks to its robust fibrous structure. Shell Cordovan can last 3-5 years whilst developing self-regenerating patina. Standard calf resists 1-2 years. Factors such as direct sunlight exposure, salt water humidity (important for a nautical timepiece) and perspiration accelerate ageing. A wet strap must be dried promptly. Maintenance with specific leather balms significantly extends durability. The Casati Milano atelier provides 18-month warranty on all bespoke straps.