IWC Portugieser Portugieser Constant-Force Tourbillon Double Moon Red Gold / Blue

Reference IW5901-06

IWC Portugieser Constant-Force Tourbillon Double Moon Red Gold / Blue

About this watch

The IWC IW5901-06 Portugieser Constant-Force Tourbillon Double Moon in Red Gold and Blue is a masterpiece of horological engineering and design. This limited-edition timepiece showcases IWC's dedication to innovation, blending cutting-edge technology with exquisite design. The striking blue sunburst dial and luxurious red gold casing make this watch a bold statement piece that turns heads. With its patented constant-force mechanism integrated into the tourbillon, this watch ensures unwavering accuracy, akin to a well-tuned engine. The 1-second jumps of the tourbillon add a dynamic element to its beauty, while the double moonphase display tracks lunar cycles—a nod to IWC's maritime roots. Whether you're attending a formal event or enjoying a casual day out, this watch adapts seamlessly to your lifestyle. Its robust 96-hour power reserve and open caseback allow for a clear view of the intricate movement. With its stunning aesthetics and intricate engineering, every detail has been meticulously crafted to provide an unparalleled experience.

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Key Features

Patented constant-force mechanism
Hand-wound IWC caliber 94800 movement
Double moonphase display
96-hour power reserve indicator
Red gold case with sapphire crystal
Blue sunburst dial
46mm diameter and 13.40mm height

Specifications

Brand

IWC

Family

Portugieser

Model

Portugieser Constant-Force Tourbillon Double Moon Red Gold / Blue

Reference

IW5901-06

Movement

94800

Movement Features

Minutes, Hours, Small Seconds
Moonphase
Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator

Case

Red Gold 46mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

Current Listings

IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $7,125

This is an IWC Portugieser Automatic 40 with a silver dial and 40mm case size. It's brand new and functions perfectly mechanically.

Condition: Brand new, unworn
Case diameter: 40mm

Posted at

Mar 21, 2026, 11:52 AM

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IWC Portugieser Chronograph IW371417 – Box & Papers – Automatic – Excellent Condition

IWC - IW371417 · $4,850

A clean example of the IWC Portugieser Chronograph IW371417, featuring a classic silver dial with Arabic numerals and blued hands. This is one of IWC’s most recognizable and wearable chronographs, offering a refined profile with strong everyday versatility.

Condition: Excellent
Case Size: 41mm diameter
Movement: Cal. 79350 automatic movement
Case Material: Stainless Steel

Posted at

Mar 18, 2026, 10:09 PM

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IWC Portugieser Chronograph Rattrapante “Edition Boutique Canada” – Ref. IW371220 – #027/150 – Full Set

IWC - IW371220 · $8,000

This is a rare IWC Portugieser Chronograph Rattrapante, one of only 150 pieces produced for the Edition Boutique Canada. It features a rattrapante complication, allowing two simultaneous elapsed times to be measured independently.

Condition: Excellent, lightly worn
Movement: IWC Caliber 76240, hand-wound rattrapante chronograph
Case size: 40.9mm diameter
Water resistance: 30m depth rating

Posted at

Mar 15, 2026, 6:08 PM

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2023 IWC Portugieser Automatic 40 IW358312 Full Set Excellent

IWC - IW358312 · $6,597

A refined, modern interpretation of the classic Portugieser design.

Condition: Excellent
Year: 2023
Contents: Full Set

Posted at

Mar 14, 2026, 3:04 PM

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IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $7,150

This IWC Portugieser Automatic is a brand new watch with a silver dial and 40mm case size. It features a mechanical movement and includes a full set of accessories.

Condition: Brand new, unworn, pristine condition
Case diameter: 40mm

Posted at

Mar 14, 2026, 11:29 AM

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IWC 1993 Portugieser Jubilee Ref. 5441 — 18k Rose Gold — Limited Edition

IWC - 5441 · $15,249

This 1993 IWC Portugieser Jubilee Ref. 5441 is a historically significant limited edition watch produced in 18k rose gold to celebrate International Watch Company's 125th anniversary.

Condition: Very good, minor scuffing around the 10 o'clock area on the crystal
Case size: ~42mm diameter
Dial material: silver
Movement type: manual-winding

Posted at

Mar 13, 2026, 7:13 PM

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IWC Portugieser Automatic 40.4mm - Full Set - Warranty to 2030

IWC - IW358304 · $5,300

The Portugieser Automatic has a classic dial design and ergonomically optimized strap horns for greater comfort, available in a 40.4mm stainless steel case with a silver-plated dial and blue tone appliqués.

Case Size: 40.4mm
Movement: IWC-manufactured 82200-calibre

Posted at

Mar 13, 2026, 10:35 AM

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IWC Portugieser Chronograph - 41mm - Gold Numerals - IW371604 ( new / 2024 )

IWC - IW371604 · $6,995

This IWC Portugieser Chronograph features a stainless steel case and gold numerals. It comes with all the original boxes, papers, booklets, and IWC Warranty Card.

Condition: unworn
Case size: 41mm diameter
Movement: In-House Calibre 69355

Posted at

Apr 2, 2025, 3:10 PM

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