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

The lug width of the IWC Pilot IW3713-44 is 21 millimetres. This measurement represents the internal distance between the two case lugs, measured eye-to-eye. It determines compatibility with straps of 20-20.5 millimetres effective width, accounting for the elastic compression of the material during wear.

For the IW3713-44, alligator straps (Mississippi/Louisiana) are recommended for formal wear, featuring regular grain texture and patina that develops over time. Alternatively, shell cordovan offers dense body and natural gloss that emerges after weeks of wear. For informal-sporty use, vegetable-tanned calf provides superior flexibility and pronounced patina. Vulcanised rubber is a technical solution for specific aeronautical use.

Changing the strap on an IWC Pilot IW3713-44 requires a spring bar tool with open slot. Position the slot under the lug pin and lift gently: the pin slides out of its seat. Repeat on the opposite side. To install the new strap, align the lug holes with the pins and compress slightly until the locking click is heard. This operation requires precision to avoid damage to the case and lugs.

Yes, all straps with 21mm lug width are compatible with the IWC Pilot IW3713-44. Always verify the actual strap width (20-20.5mm body) before purchase. Bespoke personalised straps can be adapted to specific wrist sizes, with folding <a href="/pages/termine-glossario/deployante">deployante</a> clasp or stainless steel pin buckle options, depending on preferences and intended use.

The lifespan of a leather strap depends on material and usage: American alligator resists 4-5 years with daily wear, shell cordovan reaches 6-7 years, vegetable-tanned calf lasts 3-4 years. Vulcanised rubber has virtually indefinite durability. Longevity is influenced by exposure to humidity, perspiration, direct sunlight and frequency of wear. Regular maintenance (cleaning, drying, conditioning) significantly extends the useful life of the strap.