Strap for Pilot's Watch Antoine De Saint Exupery Power Reserve Stainless Steel

The IWC Pilot IW320104 features a lug width of 21 mm, measured from the inner edge of one lug to the inner edge of the other. This specification is critical for selecting a compatible strap for the 44 mm case.

For this Big Pilot we recommend alligator leather in black or deep brown for maximum elegance, shell cordovan for those seeking unique patina development, or canvas NATO in grey-blue for tactical use. Your choice should reflect the intended usage: formal, collector-focused, or operational.

The strap is changed by extracting the spring bars that connect the lugs to the case—a straightforward procedure using a spring bar removal tool. We recommend having this performed by an authorized dealer or Casati Milano atelier to ensure precise alignment without risk of case scratching.

Yes, any strap with a 21 mm lug width is compatible. However, quality varies considerably: we recommend vegetable-tanned or animal leather with a minimum thickness of 1.4 mm to prevent deformation on the Big Pilot's stainless steel case over time.

A quality leather strap—alligator, cordovan, or certified calf—lasts 3–5 years with daily wear, developing characteristic patina throughout. Longevity depends on tanning method, material thickness, and exposure to moisture and perspiration. With proper conditioning, durability extends considerably further.