Strap for Big Pilot Antoine De Saint Exupery White Gold

The IWC Big Pilot IW5004-20 features a 22mm lug width. This measurement is the historical standard for the Big Pilot model and refers to the distance between the integrated lugs on the case that accept the strap. A compatible strap should fit smoothly into these lugs without any protrusion or excessive tension.

For a white gold Big Pilot, we recommend alligator leather with vegetable tanning: the regular grain of the hide complements the cool lustre of the precious metal without creating visual conflict. Alternatively, vegetable-tanned calf with a milled finish offers sustainability and a patina that ages elegantly, or a grey NATO strap for more sportive and functional contexts.

Strap replacement on the Big Pilot is accomplished using spring bars positioned in the case lugs. With a dedicated spring bar tool, gently press the bar on the inner side to release it, then extract the worn strap. Insert the new strap by aligning the lug width to the case lugs and push the spring bar until it clicks into place. Verify the strap sits straight before wearing the watch.

Yes, any strap with a 22mm lug width is compatible. Artisanal aftermarket straps, such as those from Milano Straps, are manufactured to technical specifications identical to original IWC straps and often offer superior materials and customisation options. Ensure the manufacturer respects the 22mm ±0.5mm tolerance for optimal fit.

A premium leather strap on a Big Pilot typically lasts 3-5 years with regular wear, depending on the tanning method, frequency of use, and UV exposure. Vegetable tanning ages more rapidly but develops a desirable patina. Alligator and shell cordovan, owing to fibre density, retain structure and aesthetics longer. Rotating between two straps extends the life of both.