IWC Portofino Portofino Lady Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Alligator

Reference IW3730-18

IWC Portofino Lady Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Alligator

About this watch

The IWC IW3730-18 Portofino Lady Chronograph MecaQuartz is a sophisticated timepiece that beautifully blends style and functionality. Founded in 1868, IWC has been a hallmark of Swiss watchmaking excellence, known for innovative designs and technical prowess. The Portofino family embodies classic elegance, aimed at those who appreciate understated luxury. This model is a testament to IWC's dedication to creating timeless pieces, featuring a round case measuring 29 mm in diameter with a perfect balance between being eye-catching and comfortably wearable. The white dial is a canvas of elegance, protected by a sapphire crystal, making it scratch-resistant for daily wear. The heart of the IW3730-18 is the Jaeger-LeCoultre caliber 631, combining quartz and mechanical technology for accuracy and complexity. This movement includes a chronograph function, adding versatility to the watch. With a comfortable alligator leather strap and water resistance of 30 meters, this watch is suitable for various occasions, both formal and casual.

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Key Features

Jaeger-LeCoultre caliber 631 MecaQuartz Movement
Sapphire Crystal Glass Protection
Water Resistance up to 30 Meters
Comfortable Alligator Leather Strap
Yellow Gold and Stainless Steel Construction

Specifications

Brand

IWC

Family

Portofino

Model

Portofino Lady Chronograph MecaQuartz Stainless Steel / Yellow Gold / White / Alligator

Reference

IW3730-18

Movement

631

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

29mm

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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