Strap for Big Pilot's Watch Big Date 150 Years Stainless Steel / White

The lug width of the IWC Big Pilot IW5105-04 is 22 mm. This measurement allows you to fit straps specifically dimensioned for this model, ensuring correct fit on the case and proportionate aesthetics. To verify compatibility, measure the distance between the case's strap attachment holes: it must be exactly 22 mm.

For a watch of the Big Pilot IW5105-04's imposing proportions, we recommend straps in alligator, shell cordovan, or vegetable-tanned calf leather. Alligator offers formal elegance and natural grain; shell cordovan communicates artisanal authenticity and develops a captivating patina; vegetable-tanned calf represents chromatic versatility and aesthetic uniformity. In informal sporting contexts, a natural rubber strap recalls the model's tactical origins.

Changing the strap on the IW5105-04 is accomplished using spring bars located at the ends of the lugs. With a specialised tool (spring bar tool or dedicated implement), proceed with care: remove the bar from the lower lug section, slide the strap outward, then insert the new strap verifying its secure locking. The operation requires precision to avoid scratching the case; if uncertain, consult a specialised service centre.

Yes. Any artisanal strap with a 22 mm lug width is compatible with the IW5105-04. On milanostraps.it you will find a complete selection of customisable leather and rubber straps, all made from certified materials and packaged for the finest ateliers. You can choose from various types (alligator, shell cordovan, calf, natural rubber), colours and stitching finishes.

The lifespan of a leather strap depends on frequency of use, climatic conditions (humidity, sun, extreme temperatures) and the material selected. An artisanal quality leather strap, made with vegetable tanning, maintains structural integrity for 3–5 years of daily wear before showing obvious signs of deterioration. Alligator tends to last longer than calf leather. Regular maintenance (dusting, drying after moisture) significantly extends the strap's useful life.