IWC Portofino Portofino Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Bracelet

Reference IW3731-04

IWC Portofino Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Bracelet

About this watch

The IWC IW3731-04 Portofino Chronograph MecaQuartz is a luxurious timepiece that embodies the perfect blend of elegance, functionality, and quality. Crafted with high-quality materials, this watch boasts a unique combination of stainless steel and yellow gold, creating a striking yet classic design. The round 35.00 mm case fits comfortably on most wrists, while the white dial features stick and dot indexes for a clean and uncluttered look. The chronograph function is elegantly positioned, allowing you to measure elapsed time with precision. Powered by the Jaeger-LeCoultre caliber 631 MecaQuartz movement, this watch combines the accuracy of quartz with the intricate mechanics of a mechanical chronograph. With 25 jewels and a total of 233 parts, this impressive feat of engineering provides a smooth and reliable experience. The IWC IW3731-04 is a timepiece that tells not just the time but also a story of craftsmanship and heritage.

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Key Features

Jaeger-LeCoultre caliber 631 MecaQuartz movement
Stainless Steel / Yellow Gold case material
White dial with stick and dot indexes

Specifications

Brand

IWC

Family

Portofino

Model

Portofino Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Bracelet

Reference

IW3731-04

Movement

631

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

35mm

Dial Color

White

Crystal

Sapphire

Water Resistance

Current Listings

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

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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

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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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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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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

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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

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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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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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