IWC Portofino Portofino Lady Chronograph MecaQuartz Stainless Steel / Black / Calf

Reference IW3730-05

About this watch

The IWC Portofino IW3730-05 is a stunning example of luxury watchmaking, combining elegance with functionality. This MecaQuartz chronograph features a compact 29mm stainless steel case, scratch-resistant sapphire glass, and a black dial adorned with stick and dot indexes. The Jaeger-LeCoultre caliber 631 movement showcases intricate engineering, providing exceptional accuracy and smooth chronograph function operation. With its lightweight case and soft calf leather strap, this watch is comfortable for all-day wear, fitting seamlessly into any occasion. Whether you're looking for a statement piece or a practical timepiece, the IWC Portofino IW3730-05 perfectly embodies the spirit of leisurely luxury.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • 29mm stainless steel case
  • Scratch-resistant sapphire glass
  • Jaeger-LeCoultre caliber 631 MecaQuartz movement
  • Chronograph function with smooth operation
  • Comfortable lightweight design
  • Black calf leather strap
  • Water resistance of 30 meters

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Lady Chronograph MecaQuartz Stainless Steel / Black / Calf
Reference
IW3730-05
Movement
631
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph
Case
Stainless Steel 29mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

IWC - IW391404 · $6,795
2025 IWC Portofino Chronograph Black in new condition, a 39mm chronograph watch.

  • Condition: New condition
  • Case Size: 39mm diameter
Posted at
May 2, 2026, 12:09 PM
Active
[WTS] 2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

IWC - IW391036 · $4,995
This is a 2019 IWC Portofino Chronograph Blue, a luxury watch featuring chronograph functionality.

  • Condition: Excellent condition with minimal signs of wear
  • Case Size: 42mm
Posted at
Apr 30, 2026, 9:48 AM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

IWC - IW391404 · $6,795
This is a brand new IWC Portofino Chronograph Black, with a 39mm diameter. The watch comes in excellent condition, fully set and ready to wear.

  • Condition: New condition
  • Year: 2025
  • Case diameter: 39mm
Posted at
Apr 30, 2026, 9:44 AM
Active
[WTS] IWC Portofino IW333101 – Solid 18k Gold – Ultra Thin Dress Watch – $3,250 OBO

IWC Portofino IW333101 – Solid 18k Gold – Ultra Thin Dress Watch – $3,250 OBO

IWC - IW333101 · $3,250
A IWC Portofino IW333101 is a timeless, ultra-thin dress watch in solid 18k yellow gold with a clean, minimalist dial and date window at 3 o'clock. It features understated luxury and ideal for both formal occasions and everyday wear.

  • Condition: Very Good
  • Case material: 18k yellow gold
  • Movement type: quartz
Posted at
Apr 25, 2026, 8:05 PM
Active
[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850

IWC - IW459604 · $7,850
A limited-edition IWC Portofino Automatic Moon Phase watch with a striking and elegant design, featuring a moon phase display and a bespoke snake-shaped solid gold rotor.

  • Condition: great condition
  • Case diameter: 37.1 mm
  • Thickness: 11.3 mm
  • Dial color: burgundy/red
Posted at
Apr 25, 2026, 10:43 AM
Active
[WTS] 2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

IWC - IW391036 · $4,995
Up for sale is a IWC Portofino Chronograph Blue, a 2019 model featuring a chronograph function.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 42mm diameter
  • Shipping: Fully insured through Fedex within the USA
Posted at
Apr 25, 2026, 9:59 AM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $6,795

IWC - IW391404 · $6,795
A 2025 IWC Portofino Chronograph Black, a high-end chronograph watch with sleek design.

  • Condition: New condition
  • Case size: 39mm
Posted at
Apr 25, 2026, 9:27 AM
Active
[WTS] 2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

2019 IWC Portofino Chronograph Blue IW391036 42mm Full Set - $4,995

IWC - IW391036 · $4,995
A blue-dialed Portofino Chronograph from IWC, featuring a 42mm case size.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 42mm
  • Movement status: Running well
Posted at
Apr 23, 2026, 3:10 PM
Active
[WTS] IWC Portofino Ref. IW391030 Day-Date Chronograph on Bracelet

IWC Portofino Ref. IW391030 Day-Date Chronograph on Bracelet

IWC - IW391030 · $3,195
This IWC Portofino Chronograph Reference IW391030 features a polished stainless steel case and a classic black dial adorned with rhodium-plated appliqués and sleek leaf-style hands.

  • Condition: Excellent, some light wear
  • Material: Stainless Steel
  • Function: Time, Day & Date
  • Dial color: Black
Posted at
Apr 23, 2026, 2:03 PM
Active