IWC Portofino Portofino Chronograph MecaQuartz Stainless Steel / White / Calf

Reference IW3731-05

IWC Portofino Chronograph MecaQuartz Stainless Steel / White / Calf

About this watch

The IWC IW3731-05 Portofino Chronograph MecaQuartz is a stunning timepiece that beautifully blends tradition with modern technology. Its elegant design, innovative movement, and practical features make it a remarkable example of what IWC has to offer. The watch's sleek stainless steel case glimmers under light, while the white dial offers perfect contrast for readability. The rounded shape and minimalist aesthetic make it a versatile accessory suitable for both formal and casual occasions. At its core lies the remarkable Jaeger-LeCoultre caliber 631, often referred to as the 'MecaQuartz.' This movement combines quartz accuracy with mechanical chronograph functionality, resulting in impeccable precision. With functions for hours, minutes, small seconds, and a date display, this watch is more than just a pretty face. The chronograph allows you to time events with ease, making it practical for everyday use. The watch features stick hands that glide smoothly over the dial, providing a classic look that matches its overall aesthetic. A high-quality calf leather strap complements the watch's elegance while ensuring a comfortable fit. With a water resistance rating of 30 meters, this watch is suitable for daily wear but not designed for diving adventures.

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Key Features

Jaeger-LeCoultre caliber 631 movement
Sleek stainless steel case
White dial with stick and dot indexes
Chronograph functionality
High-quality calf leather strap
Water resistance up to 30 meters

Specifications

Brand

IWC

Family

Portofino

Model

Portofino Chronograph MecaQuartz Stainless Steel / White / Calf

Reference

IW3731-05

Movement

631

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph

Case

Yellow Gold 35mm

Dial Color

White

Crystal

Sapphire

Water Resistance

Current Listings

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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