IWC · Ingenieur
Strap for Big Ingenieur Chronograph Stainless Steel / Black / Strap
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 diameter46 mm
ReferenceIW3784-06 (aka: 3784-06, IW378406)
FamilyIngenieur
MovementIWC caliber 89361 hours, minutes, small seconds | date | Chronograph, Flyback
CaseStainless Steel
The Ingenieur IW3784-06 (aka: 3784-06, IW378406), seen from the bench
The IWC Ingenieur IW3784-06 is a manual-wind chronograph with anti-magnetic engineering from 1976. It features a 45.50mm stainless steel case with integrated bezel secured by five screws, housing the IWC 89361 calibre with flyback chronograph function, hours, minutes, small seconds, and date. The lug width measures exactly 20mm, a critical specification for proper strap compatibility and visual balance proportional to the case diameter.
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