IWC · Ingenieur
Strap for Ingenieur Mecaquartz Chronograph Alarm Stainless Steel / Yellow Gold / Champagne / 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 diameter34 mm
ReferenceIW3815-05 (aka: IW381505)
FamilyIngenieur
MovementJaeger-LeCoultre caliber 633
Hours, Minutes, Small Seconds | Date | Chronograph | Alarm
CaseYellow Gold, Stainless Steel
The Ingenieur IW3815-05 (aka: IW381505), seen from the bench
The IWC Ingenieur IW3815-05 is a two-tone stainless steel and yellow gold timepiece with a 34 mm case, featuring the Jaeger-LeCoultre caliber 633 manual-wind movement. It incorporates a chronograph, minute and second indicators, date, and alarm function. The 20 mm lug width reflects the case geometry and ensures proper proportions on the wrist, balancing the bicolor design without visual discord.
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