IWC Portofino Portofino Chronograph Stainless Steel / Black / Milanese

Reference IW3910-30

About this watch

The IWC Portofino Chronograph IW3910-30 is a stunning timepiece that combines style with functionality, embodying elegance and sophistication. Its sleek design perfectly encapsulates the essence of the Portofino family, with a round case made from stainless steel adding durability and luxury. The black dial features stick and dot indexes for ease of reading, while elegant feuille hands sweep across the surface. A small seconds sub-dial adds complexity, hinting at precision within. Chronograph functions are intuitively placed, making it easy to track time. With a robust automatic movement based on the Sellita SW500-1, this watch operates at 28,800 vibrations per hour, ensuring accurate timekeeping and a power reserve of 44 hours. The Milanese strap is stylish and breathable, providing comfort and adjustability. Sapphire glass protects the dial from scratches, while stainless steel construction ensures durability and chic appearance.
Buy Now on Jomashop
This is an affiliate link
MSRP: $7,600
Market Price: $3,760

Key Features

  • IWC caliber 75320 automatic movement
  • 42mm stainless steel case with sapphire glass
  • Black dial with stick and dot indexes and elegant feuille hands
  • Chronograph function for measuring elapsed time
  • Milanese strap for comfort and adjustability
  • Sapphire glass for scratch resistance
  • Stainless steel construction for durability

Specifications

Brand
IWC
Family
Portofino
Model
Portofino Chronograph Stainless Steel / Black / Milanese
Reference
IW3910-30
Movement
75320
Movement Features
  • Hours, Minutes, Small Seconds
  • Date, Day
  • Chronograph
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
30

Current Listings

[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
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
Active
[WTS] IWC Portofino Chronograph $3200 SHIPPED

IWC Portofino Chronograph $3200 SHIPPED

IWC - IW391002 · $3,200
This IWC Portofino Chronograph features a 42 mm case without crown and 45 mm with crown. It includes the original strap and buckle.

  • Condition: Pre-owned, working condition, sold as-is
  • Case size: 42mm diameter
  • Band type: original
Posted at
May 16, 2026, 12:15 PM
Active
[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
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
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

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
Active
[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
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
Active
[WTS] 2015 IWC Portofino Chronograph | Complete set | Cheapp

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
Active
[WTS] 2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers

2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers

IWC - IW391008 · $3,700
a classy IWC Portofino Chronograph in 42mm size with black dial and automatic movement

  • Condition: good preowned condition with normal wear
  • Movement Type: Automatic
  • Power Reserve: 44 hours
  • Case Size: 42mm diameter
Posted at
May 9, 2026, 7:37 PM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
This is a brand new IWC Portofino Chronograph Black with a 39mm case size, featuring a chronograph function.

  • Condition: New condition
  • Case size: 39mm diameter
Posted at
May 9, 2026, 11:19 AM
Active
[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995

IWC - IW391404 · $5,995
Up for sale is a new IWC Portofino Chronograph Black, a 39mm watch with chronograph functionality.

  • Condition: New condition
  • Year: 2025
  • Case size: 39mm
  • Contents: Watch,Box,Travel Case,International Warranty Card,Instructions Manual
Posted at
May 7, 2026, 11:48 AM
Active