IWC · Pilot

Strap for Pilot's Watch Mark XVIII Le Petit Prince / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
Lug width20 mm
Case diameter40 mm
ReferenceIW3270-16 (aka: IW327016)
FamilyPilot
MovementIWC caliber 35111 hours, minutes, seconds | date
Year2018
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 IW3270-16 (aka: IW327016)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Pilot IW3270-16 (aka: IW327016), seen from the bench

The IWC Pilot watch features the caliber 35111 with indication of hours, minutes, seconds and date. The case has 20mm lugs for the strap. The movement offers the essential functions for a pilot's watch from the Swiss manufacture.

Frequently asked questions

What is the lug width of the IWC Pilot IW3270-16?

The Pilot IW3270-16 features a 20mm lug width, a historic measurement for aviation watches of this size. This width is calculated based on the distance between the two spring bars that attach the strap to the case.

What is the best strap for the IWC Pilot IW3270-16?

The choice depends on the intended use. Black or dark brown alligator is ideal for formal occasions and combines elegance with durability. Vegetable-tanned calf adds personal patina over time. A ballistic NATO keeps the professional instrument DNA alive. For outdoor use and versatility, a structured FKM rubber strap is the most resistant solution.

How do you change the strap on the Pilot IWC?

Simply use a spring bar tool to remove the spring bars that secure the current strap. After extracting the spring bars, the old strap comes off easily. Installation of the new strap is done by reinserting the spring bars from the opposite side, ensuring they fully engage in position. There is no need to disassemble the watch case.

Can I fit an aftermarket strap on the IWC Pilot IW3270-16 case?

Yes, provided the strap is specifically sized for 20mm lug widths. The width must match exactly: straps that are too wide or too narrow create excessive play or do not fit at all. On milanostraps.it you will find straps verified for complete compatibility with this model.

How long does a leather strap last on a watch like the IW3270-16?

A high-quality leather strap (alligator, calf, shell cordovan) with vegetable tanning lasts an average of 3-5 years of daily use, provided it is regularly treated with products specifically designed for leather. Humidity, sweat, and direct sun exposure accelerate wear. An FKM rubber strap has superior durability (5-8 years) thanks to the material's inherent resistance.

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.

Request an appointment →

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