Strap for Pilot's Watch Spitfire Chronograph Stainless Steel / Silver / English / Strap

The IWC Pilot IW3706-24 features a 20mm lug width—the distance between the two terminal bars where the strap attaches to the case. This dimension is specific to this model and ensures correct aesthetic and functional proportions on the wrist.

Alligator leather is the benchmark choice: it ages nobly and creates visual harmony with the satin-brushed steel case. Vegetable-tanned calf offers lighter, more contemporary elegance, whilst grey or navy NATO fabric provides a sporty-formal profile without functional compromise.

Strap replacement requires a spring bar tool to remove the axial pins from the thin holes at the lug ends. Insert the tool gently into the spring bar slot and lift outward. Remove the old strap and guide the new one through until the pins engage in the case's lug holes. The operation takes under two minutes when executed correctly.

Any strap with a 20mm lug width is compatible with the IW3706-24. MilanoStraps' online catalogue offers a curated selection of artisanal leathers, from classic reptiles to modern textiles, all constructed to this exact specification. Avoid 18mm or 22mm straps: they would compromise both aesthetics and comfort.

A quality alligator or calf strap, if maintained regularly with appropriate creams, typically lasts 3-5 years of daily wear before requiring reconditioning. Direct sunlight and constant humidity accelerate aging. Casati Milano's artisanal straps carry an 18-month warranty and unlimited support for maintenance and customisation.