IWC · Grande Complication
Strap for Grande Complication 3770 Platinum / Black / English / Bracelet
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 diameter42 mm
ReferenceIW9270-20
FamilyGrande Complication
MovementIWC caliber 79091 hours, minutes, small seconds | date, day, month, perpetual calendar, year indicator | Chronograph | moonphase | minute repeater
Year1993 - 2010
CasePlatinum
Straps for the Grande Complication IW9270-20
Selected for the 18 mm lug width
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
Hammered calfskin strap in cuoio€98
The Grande Complication IW9270-20, seen from the bench
The IWC Grande Complication IW9270-20 represents one of the most complex creations of IWC, equipped with the 79091 caliber that integrates a chronograph, perpetual calendar, moon phases, and minute repeater. The watch features indicators for hours, minutes, small seconds, full date with day, month, and year, in addition to the grand complication functions. The combination of these mechanical complications places it among the high watchmaking timepieces of the Swiss manufacture.
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