IWC Portofino Portofino Chronograph MecaQuartz Stainless Steel / White / Bracelet

Reference IW3731-06

IWC Portofino Chronograph MecaQuartz Stainless Steel / White / Bracelet

About this watch

The IWC IW3731-06 Portofino Chronograph MecaQuartz is a masterful blend of classic design and innovative technology. With its unique MecaQuartz movement, this watch combines the accuracy of quartz with the complexity of mechanical chronographs. The Jaeger-LeCoultre caliber 631 powers this remarkable timepiece, featuring 233 intricate parts that showcase the craftsmanship of IWC and Jaeger-LeCoultre. The watch's sleek profile is accentuated by a closed case back, while its yellow gold accents add a touch of luxury. The Portofino collection embodies refined style, making it a favorite among those who appreciate understated elegance. This watch is more than just a time-teller; it's a piece of art that reflects the pinnacle of Swiss watchmaking. With its stunning aesthetics and practical features, it encapsulates everything you could want in a luxury watch. Whether you're an avid collector or a first-time buyer, this model deserves your attention.

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Key Features

35mm round case with stainless steel and yellow gold accents
Jaeger-LeCoultre caliber 631 MecaQuartz movement with 233 parts
Sapphire crystal for scratch-resistance and durability
Chronograph function with elapsed time measurement
Date feature and second-hand tracking
Comfortable 18mm lug width for daily wear
30 meters water resistance for everyday activities

Specifications

Brand

IWC

Family

Portofino

Model

Portofino Chronograph MecaQuartz Stainless Steel / White / Bracelet

Reference

IW3731-06

Movement

631

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

Yellow Gold 35mm

Dial Color

White

Crystal

Sapphire

Water Resistance

Current Listings

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

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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

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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

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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

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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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