IWC Portofino Portofino Automatic Day & Night 37 Red Gold

Reference IW4591-02

IWC Portofino Automatic Day & Night 37 Red Gold

About this watch

The IWC Portofino Automatic Day & Night 37 Red Gold is a masterpiece of watchmaking that balances elegance and functionality. Its luxurious red gold case, mother of pearl dial, and gem-set bezel create a harmonious blend of color and texture. The automatic movement provides precision and reliability, while the Day & Night feature allows for convenient timekeeping across different time zones. With its comfortable size and classic feel, this watch is perfect for both formal events and casual outings. Whether dressing up or enjoying a day out, the IW4591-02 is sure to turn heads and spark conversations. Its luxurious materials, precise movement, and thoughtful features make it a standout choice for anyone looking to elevate their accessory game.
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Key Features

  • Red gold case
  • Mother of pearl dial
  • Gem-set bezel
  • Automatic movement
  • Day & Night feature
  • 42-hour power reserve
  • 28,800 vibrations per hour

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Automatic Day & Night 37 Red Gold
Reference
IW4591-02
Movement
35700
Movement Features
  • Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable)
Case
Red Gold 37mm
Dial Color
White
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
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
View listing on r/WatchExchange
[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
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[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
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[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
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View listing on r/WatchExchange
[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
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[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
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[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
Up for sale is a IWC Portofino Chronograph Black, a 39mm timepiece with chronograph functionality.

  • Condition: New condition
  • Year: 2025
  • Case size: 39mm
Posted at
May 14, 2026, 12:45 PM
Active
View listing on r/WatchExchange
[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 watch in excellent condition.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 42mm diameter
  • Shipping method: Fedex
  • Insurance included: true
Posted at
May 11, 2026, 9:48 PM
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[WTS] 2015 IWC Portofino Chronograph | Complete set | Cheapp

2015 IWC Portofino Chronograph | Complete set | Cheapp

IWC - IW391008 · $3,385
This Portofino is a timeless classic — elegant, refined, and versatile. The chronograph adds useful functionality without detracting from the dress-watch feel, making this a great addition for both daily wear and special occasions.

  • Condition: Good pre-owned
  • Case Size: 42mm
  • Movement: IWC automatic chronograph
  • Includes: Original IWC box, IWC warranty card, stainless steel mesh bracelet
Posted at
May 10, 2026, 7:18 PM
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