IWC · Pilot

Strap for Pilot’s Watch Timezoner Spitfire Edition “The Longest Flight”

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
Lug width22 mm
Case diameter44 mm
ReferenceIW3955-01 (aka: IW395501)
FamilyPilot
MovementIWC caliber 82760 hours, minutes, Additional 24 hours Hand (adjustable), seconds | date
Year2019
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Pilot IW3955-01 (aka: IW395501)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Pilot IW3955-01 (aka: IW395501), seen from the bench

The IWC Pilot IW3955-01 is a 44mm stainless steel sports watch equipped with the IWC caliber 82760 movement, featuring hour, minute, independent 24-hour hand, and date. Water resistant to 60 meters, the case incorporates a dual-bezel crown with locking mechanism for independent GMT hand adjustment. The 22mm lug width represents the optimal balance between structural robustness and visual proportion. The bidimensional bezel, two-tone dial with gold appliqués, and snow-plough hands reflect seven decades of aeronautical heritage from the Schaffhausen manufactory.

Frequently asked questions

What is the lug width of the IWC Pilot IW3955-01?

The IWC Pilot IW3955-01 features a lug width of 22 millimetres. This measurement is taken as the external distance between the two attachment pins positioned on the sides of the case. Accurate verification requires a digital calliper or ruler positioned perpendicular to the case flanks. Correct measurement ensures the purchase of a perfectly compatible strap.

Which strap is recommended for the IWC Pilot IW3955-01?

For this sport-elegant model, genuine African alligator of superior quality represents the classic aesthetic choice, developing a natural patina over time. European calf leather in vegetable tanning offers a refined alternative, particularly effective in brown or black tones. For technical use (flying, navigation), a cotton-linen NATO cord ensures security and breathability. FKM rubber performs ideally in extreme or humid environments.

How do I change the strap on an IWC Pilot IW3955-01?

Position the watch on a flat surface with the case facing upward. Locate the two attachment pins on the case flanks. Using a spring bar tool, insert the pointed tip into the small hole at the base of the pin, applying gentle downward pressure to release the spring. Remove the old strap and insert the new one by aligning the ends to the pins, then release the spring until it returns to secure position. Verify that the strap sits symmetrically on both sides.

Can I use an aftermarket strap compatible with the IWC Pilot IW3955-01?

Yes, due to the standardised 22-millimetre lug width. Aftermarket straps crafted in artisanal quality (alligator, calf, NATO) are fully compatible provided the width is verified with precision. We recommend purchase from specialised suppliers who guarantee construction quality and certified compatibility. A strap made from inferior leather will degrade rapidly and compromise the watch's aesthetics.

How long does a leather strap last on the IWC Pilot IW3955-01?

Durability depends on usage frequency, exposure to perspiration and humidity, and leather quality. Superior alligator or calf leather, used under normal conditions (6–8 hours daily), maintains structural and aesthetic integrity for 3–5 years. Frequent exposure to humidity accelerates stitching and fibre degradation. Periodic maintenance (gentle cleaning, application of specific balm) significantly prolongs longevity. Straps crafted by Casati Milano benefit from 18-month construction warranty and manufacturing excellence that guarantees superior long-term performance.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only