IWC · Pilot

Strap for Pilot's Watch Chronograph Ceramic / German / Strap

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 diameter39 mm
ReferenceIW3705-01 (aka: IW370501)
FamilyPilot
MovementIWC caliber 7922 hours, minutes, small seconds | date, day | Chronograph
Year1994 - 1998
CaseCeramic, Stainless 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 IW3705-01 (aka: IW370501)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Pilot IW3705-01 (aka: IW370501), seen from the bench

The Pilot IW3705-01 is powered by the IWC 7922 caliber with functions of hours, minutes, small seconds, date, day and chronograph. The watch features 20mm lugs and a typical aviation watch configuration. The movement offers a complete date and day indication combined with the chronograph function.

Frequently asked questions

What is the lug width of the IWC Pilot IW3705-01?

The lug width of the IWC Pilot IW3705-01 is 20mm. This measurement should be taken between the upper and lower lug attachments, excluding the metal spring bars. Precise compatibility verification is essential, as lugs measuring 19 or 22mm, although visually similar, result in mechanical play and suboptimal spring bar tension.

Which strap should I choose for the IWC Pilot IW3705-01?

For the IWC Pilot IW3705-01, straps in structured leather with vegetable tanning are recommended: alligator in neutral tones (aged brown, taupe grey, saturated black), shell cordovan, or vegetable-tanned calf with compact grain. These materials respect the instrument's constructive severity. Avoid exotic textures or vibrant colours. For technical environments, FKM rubber remains functionally valid.

How do I change the strap on the Pilot IW3705-01?

Changing the strap on the Pilot IW3705-01 requires a dedicated spring bar removal tool. Position the watch on a stable base, insert the tool into the small gap between the lug and spring bar, and gently push the bar inward until it disengages. Repeat for all four bars. Install the new strap by reversing the procedure. If inexperienced, entrust this operation to a qualified watchmaker.

Is the IWC Pilot IW3705-01 compatible with quality aftermarket straps?

Yes, the IWC Pilot IW3705-01 accepts quality aftermarket straps provided they respect the 20mm lug width specification. Online retailers offer 20mm straps customizable in Italian leather, with selectable stitching thread and personalisation options including initials. For a bespoke experience, custom straps can be commissioned from specialist artisans.

How long does a leather strap last on the Pilot IW3705-01?

A leather strap of good quality on an IWC Pilot IW3705-01 has an average lifespan of 4-6 years with daily use. Longevity depends on maintenance (periodic cleaning, drying after humidity exposure), tanning type, sun exposure, and chlorine exposure. Shell cordovan, owing to its superior density, can last 7-8 years. All leather straps benefit from an aesthetic patina that develops over time, enhancing their narrative value.

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