IWC · Ingenieur
Strap for Ingenieur SL Automatic Stainless Steel / Yellow Gold / Silver / 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
ReferenceIW3505-08 (aka: IW350508)
FamilyIngenieur
MovementIWC caliber 375
Hours, Minutes, Seconds | Date
CaseYellow Gold, Stainless Steel
The Ingenieur IW3505-08 (aka: IW350508), seen from the bench
The IWC Ingenieur IW3505-08 is a sports watch from the 1990s featuring a 34mm two-tone case combining 18kt yellow gold and stainless steel. It houses the manual-winding IWC caliber 375 movement with hours, minutes, seconds and date. The 20mm lug width accommodates proportionate straps without overwhelming the compact case, while the integrated bracelet creates visual continuity. This model represents IWC's engineering heritage dating to 1955, designed to protect precision movements from magnetic interference.
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