IWC · Ingenieur
Strap for Ingenieur Midsize Gold Index
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
ReferenceIW4515-03 (aka: 4515-03, IW451503)
FamilyIngenieur
MovementIWC caliber 30110
Hours, Minutes, Seconds | Date
CaseStainless Steel
The Ingenieur IW4515-03 (aka: 4515-03, IW451503), seen from the bench
The IWC Ingenieur IW4515-03, designed by Gérald Genta in 1976, is a 34 mm stainless steel 316L sports watch featuring integrated Faraday cage magnetic protection. The fixed bezel with five exposed screws ensures structural hermeticity, while the 20 mm lug width accommodates a defined range of straps. Powered by the IWC 30110 automatic caliber (4 Hz, 42-hour power reserve), it includes a date window and offers 120 meters water resistance.
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