Strap for Formula 1 Calibre 5 43 Stainless Steel / Grey / Bracelet

The lug width of the WAZ2011.BA0842 is 20mm. This dimension is calibrated to the geometry of the 43mm case and represents the critical parameter for selecting compatible aftermarket straps. Measurement must be taken from the external distance between the two attachment pins.

For the WAZ2011, we recommend materials with a thickness of 3.5-4.2mm. Alligator in medium grain with matte finish creates elegant contrast against the steel case. Chromium-treated calf is ideal for soft visual transitions, whilst ballistic NATO maintains sporting DNA. Vegetable-tanned leather on Tuscan calf offers a natural patina that improves over time.

The attachments on the WAZ2011 use specific spline pin removers, not universal like many competitors. You must insert the tool into the lug to extract the milled pin. We recommend entrusting the operation to an expert to avoid damaging the case. Casati Milano atelier offers strap changing service with warranty.

All straps with 20mm lug width are compatible, provided they respect the 3.5-4.2mm thickness. Milano Straps offers a wide selection of handcrafted straps in alligator, calf, vegetable tanning, NATO and rubber, all made with precision to guarantee perfect fit without ergonomic compromise.

Durability depends on material and usage. Alligator and chromium-treated calf last 4-6 years in average daily use. Vegetable-tanned leather, although requiring maintenance with specific balm, can last 5-7 years thanks to natural patina that improves elasticity. Rubber resists up to 3-4 years in chlorinated environments. Milano Straps guarantees 18 months on all bespoke straps.