IWC Portugieser Portugieser Chronograph Ceratanium

Reference IW37160-31

About this watch

The IWC Portugieser Chronograph Ceratanium IW371631, introduced in 2026, is presented in a limited edition of 1,500 pieces. The watch features a 41 mm case crafted from Ceratanium, an IWC-developed material based on a special titanium alloy that is hardened through a firing process. The crown and chronograph pushers are also executed in Ceratanium. Case height measures 13.1 mm. Water resistance is rated at 3 bar. The dial is black with black appliques and hands. Applied Arabic numerals, indices, and the quarter-second scale appear as subtle elevations against the dark background. The chronograph layout consists of two vertically arranged subdials and an inner flange with a quarter-second scale, maintaining the established Portugieser Chronograph configuration. The watch is powered by the IWC-manufactured calibre 69355. This automatic mechanical chronograph movement operates at a frequency of 28,800 vibrations per hour, or 4 Hz, and provides a power reserve of approximately 46 hours. It incorporates 27 jewels and features a column-wheel chronograph mechanism. The movement is visible through a sapphire glass case back. The Portugieser Chronograph Ceratanium IW371631 is fitted with a black rubber strap with a square pattern and a Ceratanium pin buckle.

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Specifications

Brand

IWC

Family

Portugieser

Model

Portugieser Chronograph Ceratanium

Reference

IW37160-31

Movement

69355

Movement Features

Hours, Minutes, Small Seconds
Chronograph, Column wheel

Case

41mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

Current Listings

IWC Portugieser Regulateur. IW544401. Box, Papers...

IWC - IW544401 · $5,500

A IWC Portugieser Regulateur, a high-end watch with complex features.

Box: true
Papers: true

Posted at

May 9, 2026, 3:52 PM

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IWC Portugieser Chronograph IW371616

IWC - IW371616 · $7,100

For sale is a IWC Portugieser Chronograph IW371616 in excellent condition, featuring a red / burgundy sunburst dial. This watch is part of the modern Portugieser Chronograph lineup from IWC Schaffhausen and has a slim profile, balanced dial layout, and signature feuille hands.

Condition: Excellent
Case material: Stainless steel
Case size: 41mm
Dial color: Burgundy sunburst

Posted at

May 9, 2026, 2:06 PM

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2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

IWC - IW371615 · $5,995

This is a 2022 IWC Portugieser Chronograph Green, a 41mm watch with chronograph functionality.

Condition: Excellent condition with minimal signs of wear
Case size: 41mm diameter
Water resistance: 30m depth rating

Posted at

May 9, 2026, 11:22 AM

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[US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $6,950

This IWC Portugieser Automatic 40 features a silver dial and 40mm case. It is fully mechanical with no issues and includes various accessories.

Condition: Brand new, unworn
Case size: 40mm
Movement type: Automatic

Posted at

May 9, 2026, 7:23 AM

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2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995

IWC - IW371615 · $5,995

This 2022 IWC Portugieser Chronograph Green features a 41mm case and is in excellent condition. It has been thoroughly tested on a timegrapher and is running well.

Condition: Excellent condition with minimal signs of wear
Year: 2022
Case Size: 41mm diameter
Contents: Watch, Box, Travel Case, International Warranty Card, Instructions Manual

Posted at

May 7, 2026, 11:51 AM

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IWC Portugieser Chronograph IW371624 Automatic Dune Dial 41mm Full Set

IWC - IW371624 · $7,297

This is a pre-owned IWC Portugieser Chronograph with a stainless steel case, automatic movement, and dune dial on a black alligator strap. It's in very good condition with normal signs of wear.

Condition: Very good condition
Case size: 41mm
Case material: Stainless steel

Posted at

May 4, 2026, 10:21 AM

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