IWC Portofino Portofino Automatic 37 Red Gold / Ardoise

Reference IW4581-06

About this watch

The IWC Portofino Automatic 37 is a masterpiece of luxury watchmaking, blending elegance with functionality in perfect harmony. Its round red gold case and stunning grey dial are set off by gem-set indexes that add a touch of sparkle, while the feuille hands glide smoothly over the dial for a delightful reading experience. With a diameter of 37 mm and a height of only 9.00 mm, this watch sits comfortably on the wrist, making it an excellent choice for daily wear. Powered by the reliable IWC caliber 35111 movement, this timepiece boasts 25 jewels, a 42-hour power reserve, and a frequency of 28,800 vibrations per hour, ensuring precision and reliability. The date function is seamlessly integrated into the design, while the water resistance of 30 meters allows for brief immersion in water without worrying about damage. This watch is not just a time-telling device but a statement piece that radiates sophistication and style, making it perfect for anyone who appreciates fine craftsmanship and timeless design.
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Key Features

  • Red gold case
  • Stunning grey dial with gem-set indexes
  • Feuille hands
  • IWC caliber 35111 movement
  • 25 jewels
  • 42-hour power reserve
  • 28,800 vibrations per hour

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Automatic 37 Red Gold / Ardoise
Reference
IW4581-06
Movement
35111
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Red Gold 37mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
This 2025 IWC Portofino Chronograph Black is a brand new timepiece featuring a chronograph function. The watch comes in a 39mm case and includes a full set of accessories, including the box, travel case, international warranty card, and instructions manual.

  • Condition: New condition
  • Case size: 39mm diameter
Posted at
May 24, 2026, 11:47 AM
Active
[WTS] IWC Portofino Chronograph $3200 SHIPPED

IWC Portofino Chronograph $3200 SHIPPED

IWC - IW391002 · $3,200
A pre-owned IWC Portofino Chronograph in working condition at the time of listing, but not guaranteed for future performance.

  • Condition: Pre-owned, working condition
  • Case Size Without Crown: 42 mm
  • Case Size With Crown: 45 mm
  • Straps Included: 1
Posted at
May 23, 2026, 12:37 PM
Active
[WTS] IWC Portofino 42MM Black Dial, Stainless Steel Full Set

IWC Portofino 42MM Black Dial, Stainless Steel Full Set

IWC - IW391010 · $4,000
This 2018 IWC Portofino Chronograph features a black dial, stainless steel case and Milanaise bracelet. It includes day and date display, small hacking seconds, chronograph function and is a full set with original box, warranty card and manual.

  • Condition: beautiful condition with no visible scratches
  • Bracelet Type: Milanaise
  • Case Size: 42MM
Posted at
May 22, 2026, 8:14 PM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
A 2025 IWC Portofino Chronograph Black IW391404 is available for sale. It features a chronograph function and comes with a full set including the watch, box, travel case, international warranty card, and instructions manual.

  • Condition: New condition
  • Size: 39mm diameter
  • Year: 2025
  • Case Contents: Watch, Box, Travel Case, International Warranty Card, Instructions Manual
Posted at
May 21, 2026, 10:00 PM
Active
[WTS] IWC Portofino Chronograph — 42mm — Ref. IW391029 — $2,699 Shipped 🔥

IWC Portofino Chronograph — 42mm — Ref. IW391029 — $2,699 Shipped 🔥

IWC - IW391029 · $2,699
This IWC Portofino Chronograph features a clean, timeless case design paired with a classic chronograph layout. It's a refined everyday luxury chronograph that wears well at 42mm.

  • Condition: Fair overall
  • Case Diameter: 42mm
  • Condition Notes: Crystal has minor AR coating wear, Bezel, case, caseback, and clasp show hairlines from normal wear
Posted at
May 20, 2026, 9:35 PM
Active
[WTS] IWC Portofino Automatic Moonphase 40mm IW459402 – Box/Watch/Papers – $5000 - Warranty until 11/2029!

IWC Portofino Automatic Moonphase 40mm IW459402 – Box/Watch/Papers – $5000 - Warranty until 11/2029!

IWC - IW459402 · $5,000
This IWC Portofino Automatic Moonphase features a 40mm case. The watch comes with its original box, papers, and is still under warranty until 11/2029.

  • Box: yes, included
  • Papers: yes, included
  • Warranty: until November 2029
Posted at
May 20, 2026, 5:54 PM
Active
[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC - IW459604 · $7,850
The IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake is a striking and elegant limited-edition piece that blends classic dress watch refinement with artistic flair. The 37mm polished stainless steel case paired with the rich burgundy/red dial gives this watch an eye-catching yet tasteful presence on the wrist.

  • Condition: great condition
  • Case size: 37.1 mm
  • Thickness: 11.3 mm
  • Dial color: burgundy/red
Posted at
May 16, 2026, 4:24 PM
Active
[WTS] IWC Portofino Chronograph $3200 SHIPPED

IWC Portofino Chronograph $3200 SHIPPED

IWC - IW391002 · $3,200
This IWC Portofino Chronograph features a 42 mm case without crown and 45 mm with crown. It includes the original strap and buckle.

  • Condition: Pre-owned, working condition, sold as-is
  • Case size: 42mm diameter
  • Band type: original
Posted at
May 16, 2026, 12:15 PM
Active
[WTS] 2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395

IWC - IW391027 · $4,395
A 2021 IWC Portofino Chronograph White, a 42mm chronograph watch featuring a white dial.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2021
  • Size: 42mm diameter
  • Contents: Box, Travel Case, International Warranty Card, Instructions Manual
Posted at
May 14, 2026, 12:48 PM
Active