Strap for Big Crown ProPilot Big Day Date Stainless Steel / Blue

The lug width is 22 millimetres. To verify, insert a soft measuring tape into the lug seat between the two spring bars: the distance measured between the internal shoulders of the case will be exactly 22 millimetres. This dimension is standard and offers compatibility with thousands of straps available on the market.

It depends on the context of use. A vegetable-tanned leather strap provides daily elegance and develops natural patina over time. A NATO strap in regenerated yarns maintains the tactical aura and aeronautical functionality. An FKM rubber strap is the ideal choice for humid or harsh environments, guaranteeing water and oil resistance.

Use a dedicated spring bar removal tool. Insert the blade into the pin slot, gently push downward to compress the internal spring, and retract the pin. Repeat on the other side. For installation, insert the pin into the hole of the new strap, then guide it into the case lug until you hear a click.

Yes. Any 22-millimetre strap with standard spring bars is compatible. Artisanal straps in vegetable-tanned leather, NATO and rubber of Italian manufacturing guarantee mechanical compatibility and construction quality superior to industrial products, whilst maintaining the aesthetic proportions of the model.

A naturally tanned leather strap lasts on average 3-5 years if exposed to moderate climate variations and worn daily. Lifespan increases to 7-10 years if worn occasionally. Patina development is natural and desirable. Regular maintenance (cleaning and conditioning) significantly extends the life of the strap.