IWC · Ingenieur
Strap for Ingenieur Chronograph Silberpfeil Silver
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 diameter45 mm
ReferenceIW3785-05 (aka: 3785-05, IW378505)
FamilyIngenieur
MovementIWC caliber 89361
Hours, Minutes, Small Seconds | Date | Chronograph, Flyback
CaseStainless Steel
The Ingenieur IW3785-05 (aka: 3785-05, IW378505), seen from the bench
The IWC Ingenieur IW3785-05 is a 45mm stainless steel chronograph representing the modern evolution of an icon born in 1954. Equipped with the IWC 89361 automatic caliber featuring flyback chronograph, hours, minutes, small seconds, and date, this watch combines engineering precision with robust construction. The 20mm lug width is the optimal proportion for this case diameter and defines the compatible strap universe.
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