IWC · Ingenieur

Strap for Ingenieur SL Automatic Stainless Steel / Black / 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 diameter34 mm
ReferenceIW3505-02 (aka: IW350502)
FamilyIngenieur
MovementIWC caliber 375 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The Ingenieur IW3505-02 (aka: IW350502), seen from the bench

The IWC Ingenieur IW3505-02 is a stainless steel automatic watch from the 1950s featuring a compact 34mm case diameter and a 20mm lug width. It is powered by the IWC Caliber 375 manual-wind movement and includes a Faraday cage for magnetic protection. The watch features a minimalist dial with applied indices, feuille hands, and a date window at 6 o'clock, representing classical Swiss watchmaking design.

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