Online pre-sale: The all-new green dial Portugieser Chronograph IW371615 is currently available exclusively online. Shop now.

IWIW391023-Portofino Chronograph Edition “150 Years”

Past Collections, 2018

IW391023

Portofino Chronograph Edition “150 Years”

Stainless steel case, Automatic, self-winding, Diameter 42.0 mm.

Made in Schaffhausen, Switzerland.

More Details
Please contact us to reserve this item
Limited Availability – contact us to purchase over the phone

Call to Buy Call for Information

An IWC Schaffhausen Concierge will be happy to help you complete your purchase or answer any questions

Or send us a message through our online form 


See technical details

An IWC Schaffhausen Concierge will be happy to help you complete your purchase or answer any questions

Or send us a message through our online form 

IW391023 Specifications

case

case

  • Stainless steel case
  • Diameter 42.0 mm
  • Height 13.6 mm
  • Water resistance 3 bar

Movement

Movement

  • 79320 Calibre
  • Automatic, self-winding
  • 44 hours Power Reserve
  • Frequency 28800.0 vph (4.0 hz)
  • 240 Components
  • 25 Jewels
  • Côtes de Genève, perlage

Features

Features

  • Chronograph function with hours, minutes and seconds
  • Day and date display
  • Sapphire glass, convex, antireflective coating on both sides
  • Small hacking seconds
  • Limited to 2000 pieces

dial

dial

  • Blue dial

Strap

Strap

  • Black alligator leather strap
  • Strap width 20 mm

 

 

Care for your IWC Watch

 

Like any precision mechanical instrument, a watch from IWC Schaffhausen needs regular care and maintenance.

Learn more about your watch and how to maintain it. 

 

Complete Service

 

It involves a full overhaul of the timepiece and is a complex, largely manual task that takes several hours.

 

 

 

HOW-TO TIPS

 

Learn how to clean your watch, wind it and more in our six-part “How To…” video series.

 

 

 

 

FAQS

 

If you can’t find answers to your questions here, please feel free to contact a member of our service staff.

 

The latest from the world of IWC Schaffhausen