Technical Archive

IWC
Big Pilot IW5104-01 (aka: 5104-01, IW510401)— lug 26mm

Cinturini 26mm per IWC Big Pilot IW5104-01. Alligatore, vitello, NATO. Spedizione rapida e personalizzazione artigianale.

Big Pilot Heritage 55 — orologio

Artisanal Note

"This model requires a precise 26mm lug width to preserve the original sartorial balance."

Technical Specifications

IWC IW5104-01 (aka: 5104-01, IW510401)
Lug Width
26 mm

The essential strap measurement.

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Reference

IW5104-01 (aka: 5104-01, IW510401)

Movement

IWC caliber 98300 Hours, Minutes, Small Seconds

The Heritage

The IWC Big Pilot IW5104-01 is a 55mm titanium sports watch representing the brand's aviation heritage dating to the 1940s military Fliegeruhr. It features the automatic IWC 98300 caliber with manual winding, hours, minutes, and small seconds, offering 42 hours of power reserve. The titanium case provides superior corrosion resistance and lightweight durability. The 26mm lug width requires custom strap solutions, as most standard manufacturers focus on 20, 22, and 24mm widths. Wide, high-contrast dial indices ensure legibility across varying light conditions.

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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By appointment only · Milan