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
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
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[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
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[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
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[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
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[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
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[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
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[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
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IWC Portofino Automatic 40MM IW356303 Silver Dial

IWC Portofino Automatic 40MM IW356303 Silver Dial

IWC - IW356303 · $2,080
IWC Portofino Automatic 40MM IW356303 Silver Dial is a men's watch with a mechanical automatic movement.

  • Condition: 90%
  • Size: 40mm diameter
  • Case material: Stainless Steel
Posted at
Apr 8, 2025, 8:48 AM
Active
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2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401

2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401

IWC - IW516401 · $8,875
This IWC Portofino Hand-Wound Moon Phase features a silver-plated dial with a moon phase display, high-polished stainless steel domed bezel and case, and an exhibition caseback offering a clear view of the movement. It has an 8-day power reserve when fully wound and includes various functions such as hours, minutes, date, small seconds subdial, moon phase display, and power reserve indicator.

  • Condition: Mint
  • Case Size: 42mm
  • Material: stainless steel
  • Movement Type: hand-wound
Posted at
Apr 2, 2025, 5:33 PM
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