The Titanium Field Guide

IWC Portugieser Chronograph Ceratanium

IW371631

The IWC Portugieser Chronograph Ceratanium is a current-production chronograph watch with a ceratanium ceramized titanium case. The caseback is open, so the movement is visible.

All IWC watchesExotic-material chronograph watchesDisplay back
Material
Ceramized titanium
Grade / type
Ceratanium
Water resistance
30 m
Reference
IW371631
Type
Chronograph
Case diameter
41.0 mm
Thickness
13.1 mm
Lug-to-lug
47.9 mm
Origin
Switzerland
Movement
Automatic chronograph, column wheel
Caliber
IWC 69355
Power reserve
46 hours
Complications
Chronograph
Colour
Black
Construction
Monobloc
Finish technology
Ceramized titanium
Caseback
Sapphire (tinted)
Nickel-free
Unconfirmed (bracelet, strap, or clasp hardware not confirmed)
Bracelet / strap
Integrated black textured rubber strap with a Ceratanium buckle
Crystal
Sapphire
Display back
Yes
Dial
Black
Dial colours
Black
Availability
Offered
Status
Current (limited edition of 1,500)
Not published
Price, Weight, Hardness, Surface treatment, Matching bracelet, Lume
Medium confidence Verified Jul 2026 Source: SJX / IWC product page
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the IWC Portugieser Chronograph Ceratanium?

The IWC Portugieser Chronograph Ceratanium has a ceratanium ceramized titanium case with a sapphire (tinted) caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the IWC Portugieser Chronograph Ceratanium?

It is 41.0 mm in diameter, 13.1 mm thick, 47.9 mm lug to lug, and water resistant to 30 m.

How much does the IWC Portugieser Chronograph Ceratanium cost, and is it available?

It is current-production; the guide does not list a price for it.

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