IWC · Pilot

Strap for Pilot's Watch Chronograph Ceramic / German / 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 diameter39 mm
ReferenceIW3705-05 (aka: IW370505)
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 IW3705-05 (aka: IW370505)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Pilot IW3705-05 (aka: IW370505), seen from the bench

The IWC Pilot IW370505 features the caliber 7922 with hour, minute, small seconds, date, day and chronograph functions. The watch has 20mm lugs and offers the typical complications of pilot's timepieces. The movement integrates the day of the week display in addition to the standard chronograph functions.

Frequently asked questions

What is the lug width of the IWC Pilot IW3705-05?

The IWC Pilot IW3705-05 features a lug width of 20mm. This measurement is critical for strap compatibility, indicating the distance between the two lugs (lateral pins) where the strap connects to the case. Using a digital calliper, measure from the outside edge of one lug to the outside edge of the opposite lug.

What is the best strap for the IWC Pilot IW3705-05?

The optimal strap depends on intended usage. For formal contexts and longevity, American alligator is ideal due to its regular grain pattern and patina that improves over time. For dynamic professional environments, vegetable-tanned calf leather offers elegance and softness. For aviation and water sports, cotton/nylon NATO ensures durability and quick-drying properties. Vulcanised rubber is perfect for frequently humid environments.

How do you change the strap on the IWC Pilot IW3705-05?

Strap replacement requires a specialised tool, typically a spring bar remover. Position the watch on a soft surface, locate the pins connecting the strap to the lugs, insert the remover from the outside toward the inside, and fully extract the pin. Repeat for the second pin, then install the new strap by reversing the procedure. If uncertain, consult a specialised watch repair laboratory.

Is an aftermarket strap compatible with the IWC Pilot IW3705-05?

Yes, provided the strap features a 20mm lug width and standard pin holes (typically 1.5-2mm diameter). Quality artisanal straps adhere to these specifications. Ensure the strap has adequate thickness (2.8-3.2mm for premium leathers) to avoid visible gaps between the lug and strap keeper.

How long does a genuine leather strap last on the IWC Pilot IW3705-05?

Genuine leather strap longevity depends on leather quality and usage patterns. Premium alligator or vegetable-tanned calf lasts 5-8 years with daily wear, extendable to 10-12 years with occasional wear. Frequent exposure to perspiration, chlorinated water, and direct sunlight reduces lifespan. Atelier Casati Milano provides an 18-month warranty on artisanal straps, covering construction defects and material flaws.

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