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
- 30
Current Listings
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2021 IWC Portugieser Chronograph Blue IW371606 41mm Full Set - $5,395
A 2021 IWC Portugieser Chronograph Blue in excellent condition, featuring a 41mm case and equipped with a chronograph function.
- Condition: Excellent condition with minimal signs of wear
- Case Size: 41mm diameter
- Year: 2021
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IWC Portugieser Chronograph IW371624 Dune Dial 41mm Full Set 2024
A pre-owned IWC Portugieser Chronograph Ref. IW371624 features a stainless steel case, dune dial on black alligator leather strap, and automatic chronograph movement. It is accompanied by its original box, papers, and contents.
- Condition: Very good condition with light signs of normal wear
- Case size: 41mm diameter
- Case material: Stainless steel
- Movement type: Automatic chronograph
![[WTS] REDUCED TO SELL: 1993 IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition](https://preview.redd.it/f1g5aw9grd3h1.jpg?width=640&crop=smart&auto=webp&s=37f6e2596ec5231af5f24b3a7621c62baaea748e)
REDUCED TO SELL: 1993 IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition
A limited edition 1993 IWC Portugieser Jubilee Ref. 5441 in 18k rose gold, one of only 500 produced to celebrate International Watch Company's 125th anniversary.
- Condition: very good vintage condition, minor scuffing around the ~10 o'clock area on the crystal
- Case size: ~42 mm
- Dial material: silver
- Movement type: manual winding
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IWC Portugieser Automatic (IW500109)
This IWC Portugieser Automatic features a black dial on a black leather strap, is discontinued and in very good condition. It comes with box, booklets, and warranty card dated January 2011.
- Condition: very good with a few light marks
- Case Material: Stainless Steel
- Bracelet Material: Leather
- Crystal: Sapphire
![[WTS] 2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995](https://preview.redd.it/6bdvfz54x33h1.jpg?width=640&crop=smart&auto=webp&s=9159d4a0ff9bbc52a08eed1dd3e923e60e025cbd)
2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995
A 2022 IWC Portugieser Chronograph Green, a chronograph watch with green dial. It features a 41mm case and is in excellent condition.
- Condition: Excellent condition with minimal signs of wear
- Year: 2022
- Case size: 41mm
![[WTS][US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW](https://preview.redd.it/qkt3e9tbsu2h1.jpg?width=640&crop=smart&auto=webp&s=7eedb450b7fcbcdc50a40895c6f8ab44fcda5f0b)
[US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW
This IWC Portugieser Automatic 40 is a mechanical watch with a silver dial and 40mm case. It features a digital transferable warranty until 12/2025.
- Condition: Brand new, unworn
- Case size: 40mm
![[WTS] 2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995](https://preview.redd.it/ncdbodktkl2h1.jpg?width=640&crop=smart&auto=webp&s=d7b5f8549e3b4d8c9e27591a0ba6173cee7aff6b)
2022 IWC Portugieser Chronograph Green IW371615 41mm Full Set - $5,995
This is a 2022 IWC Portugieser Chronograph Green, a high-end chronograph watch with a 41mm case size.
- Condition: Excellent condition with minimal signs of wear
- Year: 2022
- Case size: 41mm
![[WTS] IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set](https://preview.redd.it/2w81v03t7w1h1.jpg?width=640&crop=smart&auto=webp&s=010e3a44e87c9ca75618fae32f8b008ba4035e7a)
IWC Portugieser Chronograph IW371624 Automatic Dune Dial 2024 41mm Full Set
This is an IWC Portugieser Chronograph with a stainless steel case, dune dial on black alligator strap, and automatic movement.
- Condition: Very good
- Case size: 41mm diameter
- Material: Stainless steel
- Movement: Automatic
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IWC Portugieser Tourbillon Mystere, White Gold IW504207 ♦️Lightly Used Undated♦️
This IWC Portugieser Tourbillon Mystere features a white gold case and is in lightly used condition. It comes with a full set, including the box and papers.
- Condition: Lightly Used
- Case material: White Gold
- Movement: Calibre 65