IWC Portofino Portofino Automatic 37 Red Gold / Silver

Reference IW4581-05

IWC Portofino Automatic 37 Red Gold / Silver

About this watch

The IWC Portofino IW4581-05 is a stunning luxury watch that exudes elegance and sophistication. Its 37mm round case, made from luxurious red gold, features a classic design inspired by the Italian Riviera. The sapphire glass adds durability while enhancing the dial's clarity, showcasing a stunning silver color with gem-set indexes that reflect light beautifully. The Feuille hands sweep across the dial, offering a classic touch to the overall design. With its reliable IWC Caliber 35111 movement and power reserve of 42 hours, this watch is perfect for everyday wear or special occasions. Its comfortable fit and adjustable leather strap ensure a secure fit on any wrist size. The IW4581-05 is not just a timekeeper; it's a statement piece that tells a story of elegance and sophistication.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • 37mm round case in red gold
  • Sapphire glass for durability and clarity
  • IWC Caliber 35111 automatic movement with 42-hour power reserve
  • Adjustable leather strap for comfortable fit
  • Gem-set indexes on silver dial
  • Feuille hands for classic design touch

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Automatic 37 Red Gold / Silver
Reference
IW4581-05
Movement
35111
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
Red Gold 37mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
30

Current Listings

[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
This is a 2021 IWC Portofino Chronograph White, featuring a chronograph function and a 42mm diameter case.

  • Condition: Excellent condition with minimal signs of wear
  • Size: 42mm diameter
  • Year: 2021
Posted at
Apr 19, 2026, 7:11 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portofino Chronograph IW391031 Silver Dial, Full Set 2019

IWC Portofino Chronograph IW391031 Silver Dial, Full Set 2019

IWC - IW391031
Posted at
Apr 19, 2026, 6:17 PM
Active
View listing on r/WatchExchange
[WTS] 2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $5,095

2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $5,095

IWC - IW391036 · $5,095
This IWC Portofino Chronograph Blue is a 2019 model, reference IW391036, featuring a blue dial and chronograph function. It's in excellent condition and has been thoroughly tested on a timegrapher.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 42mm diameter
  • Water resistance: 30m depth rating
Posted at
Apr 18, 2026, 5:25 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,900

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,900

IWC - IW459604 · $7,900
A limited-edition IWC Portofino Automatic Moon Phase watch with a 37mm polished stainless steel case and burgundy/red dial. The watch features a moon phase display, a snake-shaped solid 18k 5N gold rotor, and an IWC-manufactured Calibre 32800 automatic movement.

  • Condition: great
  • Case size: 37.1mm
  • Thickness: 11.3mm
  • Dial color: burgundy/red
Posted at
Apr 18, 2026, 2:49 PM
Active
View listing on r/WatchExchange
[WTS] 2022 IWC Portofino Chronograph ref: IW391037 - full set

2022 IWC Portofino Chronograph ref: IW391037 - full set

IWC - IW391037 · $4,998
The IWC Portofino Chronograph IW391037 is a watch that brings together precision and heritage in a design that feels both purposeful and refined. It features a crisp, white dial with deep blue hands on a blue alligator strap, along with three chronograph subdials and the day and date at the 3 o'clock position.

  • Condition: Very good pre-owned condition
  • Case size: 42mm diameter
  • Movement type: Automatic
Posted at
Apr 17, 2026, 5:07 PM
Active
View listing on r/WatchExchange
[WTS] 2019 IWC Portofino Automatic ref: IW356519 - Full set

2019 IWC Portofino Automatic ref: IW356519 - Full set

IWC - IW356519 · $3,598
The IWC Portofino Automatic Edition '150 Years' is a limited jubilee collection edition watch with a 40mm case size, crisp white dial, and date display at the 3:00 position. It features a 42-hour power reserve and 30 meters of water resistance.

  • Condition: Very good pre-owned condition with very faint signs of wear
  • Case size: 40mm diameter
  • Water resistance: 30 meters
Posted at
Apr 17, 2026, 4:46 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portofino Moonphase 41mm Auto with Box/Papers - IW459402 - Active Warranty until 11/2029

IWC Portofino Moonphase 41mm Auto with Box/Papers - IW459402 - Active Warranty until 11/2029

IWC - IW459402 · $12,500
IWC Portofino Moonphase 41mm Auto with box and papers, active warranty until 11/2029.

  • Case size: 41mm
  • Water resistance: 30m
Posted at
Apr 17, 2026, 3:32 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC - IW459402 · $4,950
This IWC Portofino Automatic Moon Phase features a 40mm blue dial. The watch is in very good condition, rated at 9.5/10.

  • Condition: Very good condition, a few microscratches on the caseback and clasp.
  • Box Count: 2
  • Movement Type: Automatic
Posted at
Apr 17, 2026, 10:11 AM
Active
View listing on r/WatchExchange
[WTS] 2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $5,095

2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $5,095

IWC - IW391036 · $5,095
A 2019 IWC Portofino Chronograph Blue, a 42mm chronograph watch in excellent condition.

  • Condition: Excellent condition with minimal signs of wear
  • Case Size: 42mm diameter
Posted at
Apr 16, 2026, 6:46 PM
Active
View listing on r/WatchExchange