IWC · Ingenieur
Strap for Ingenieur Mecaquartz Chronograph Alarm Stainless Steel / Yellow Gold / Black / Strap
Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
21mm
Lug width21 mm
Case diameter34 mm
ReferenceIW3815-02 (aka: IW381502)
FamilyIngenieur
MovementJaeger-LeCoultre caliber 633
Hours, Minutes, Small Seconds | Date | Chronograph | Alarm
CaseYellow Gold, Stainless Steel
The Ingenieur IW3815-02 (aka: IW381502), seen from the bench
The IWC Ingenieur IW3815-02 is a 34mm stainless steel and yellow gold chronograph introduced in 1955 to resist magnetic fields in industrial environments. It houses the Jaeger-LeCoultre caliber 633 movement, featuring hours, minutes, small seconds, date, column-wheel chronograph, and mechanical alarm function. The 21mm lug width accommodates a variety of aftermarket straps while maintaining the case-to-strap proportion characteristic of the Ingenieur collection.
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