IWC · Ingenieur
Strap for Big Ingenieur Chronograph 'DFB'
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
ReferenceIW3784-04
FamilyIngenieur
MovementIWC caliber 89361 hours, minutes, small seconds | date | Chronograph, Flyback
Year2010 - 2010
CaseStainless Steel
The Ingenieur IW3784-04, seen from the bench
The IWC Ingenieur IW3784-04 is a 45.50mm stainless steel chronograph with 20mm lug width, featuring the automatic IWC 89361 calibre with flyback function, small seconds, date, and magnetic resistance of 80,000 A/m. Heir to a lineage born in 1976 from Gérald Genta's vision, this model embodies Schaffhausen's engineering philosophy through its cylindrical case with sharp edges and integrated bracelet. The sapphire crystal and case back closure ensure magnetic field isolation for optimal long-term movement performance.
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