Strap for Pilot's Watch Doppelchronograph Stainless Steel / Black / Spanish / Bracelet

The lug width of the IWC Pilot IW3713-26 is 21 millimetres. This measurement is essential for selecting a compatible strap. To verify it correctly, measure the distance between the two metal pins (lugs) that hold the strap on the case: it must be exactly 21mm to ensure a precise fit without play or compression.

Given the pilot-tool vocation of this model, straps with sober and functional materials are recommended: natural or dark-toned alligator, vegetable-tanned calf, NATO in grey-blue or brown cotton, or FKM rubber with fine grain texture. The choice must respect the avionic identity of the timepiece, avoiding saturated colours or excessive finishes. Alligator offers tactile elegance; calf develops patina over time; NATO ensures maintenance practicality; rubber guarantees grip even in high humidity or perspiration conditions.

Strap replacement requires a spring bar removal tool (two-pronged instrument). Position the watch with the lug facing you, gently insert the tool's tip into the lateral groove of the metal pin to release the internal spring, then slide the pin out of the case. Repeat the operation on the other pin, remove the old strap, and proceed in reverse order to insert the new one, verifying that the pins are firmly locked on both sides.

Yes, all straps with a 21mm lug width are compatible with the IWC Pilot IW3713-26. High-quality artisanal aftermarket straps (in leather, alligator, or technical fabrics) fit perfectly to the original pins. It is advisable to choose specialised suppliers that guarantee durable materials and saddle-stitched seams, to ensure reliability over time and during potential seasonal changes.

The lifespan of a leather strap depends on the tanning method, frequency of use, and environmental conditions. A calf strap with vegetable tanning, if worn daily, maintains optimal functionality for 3-5 years; with occasional use it can exceed 7 years. Alligator, being more resistant to stress, tends to last longer (5-8 years). Straps with protective finishes (such as cordovan or chrome-tanned leather) further extend longevity. Regular maintenance (cleaning with a damp cloth, storage in a dry environment) significantly extends the strap's lifespan.