The Ingenieur Perpetual Calendar 41 is the first titanium model to combine the Gérald Genta-inspired Ingenieur design with the perpetual calendar developed by Kurt Klaus.

Overview
Reference: IW344904
Dial Color: Grey
Case: Titanium
Strap: Titanium bracelet
Diameter: 41.6 mm
Movement: Automatic, self-winding, IWC-manufactured movement

Features
Sapphire glass, convex, antireflective coating on both sides
Glass secured against displacement by drop in air pressure
Pellaton automatic winding
Perpetual calendar with displays for the date, day, month, leap year and perpetual moon phase

Case
Case: Titanium
Diameter: 41.6 mm
Height: 13.2 mm
Water Resistance: 10 Bar
Back case: With synthetic sapphire crystal

Movement
Caliber: 82600
Movement type: Automatic, self-winding
IWC-manufactured movement: Yes
Power Reserve: 60 hours
Frequency: 28800 Vph (4 Hz)
Components: 309
Jewels: 46