The Portofino Automatic 37 features the IWC-manufactured 32111 caliber and a see-through sapphire glass back displaying the movement.

Overview
Reference: IW458602
Dial Color: Green
Case: Stainless steel
Strap: Stainless steel bracelet with quick-change system
Diameter: 37 mm
Movement: Automatic, self-winding, IWC-manufactured movement

Features
Sapphire glass, convex, antireflective coating on both sides
Central hacking seconds
IWC bracelet quick-change system
Date display

Case
Case: Stainless steel
Diameter: 37 mm
Height: 9.4 mm
Water Resistance: 5 Bar
Back case: With synthetic sapphire crystal

Movement
Calibre: 32111
Movement type: Automatic, self-winding
IWC-manufactured movement: Yes
Power Reserve: 120 hours
Frequency: 28800 Vph (4 Hz)
Components: 163
Jewels: 21
Decoration: Côtes de Genève, Perlage