IWC · Ingenieur
Strap for Ingenieur SL Perpetual Calendar / Strap / English
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
18mm
Lug width18 mm
Case diameter35 mm
ReferenceIW3540-03 (aka: 3540-03, IW354003)
FamilyIngenieur
MovementIWC caliber 35782 hours, minutes, seconds | date, day, leap year, month, perpetual calendar, year indicator | moonphase
Year1987 - 1992
CaseYellow Gold
The Ingenieur IW3540-03 (aka: 3540-03, IW354003), seen from the bench
The Ingenieur IW3540-03 is equipped with the IWC 35782 caliber that integrates a full perpetual calendar with indication of year, month, day, leap year and moon phases. The movement manages the functions of hours, minutes, seconds and date through a system of mechanical complications. The reference belongs to the IWC Ingenieur collection dedicated to precision technical watches.
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