IWC Portofino Portofino Automatic 37 Stainless Steel / Silver

Reference IW4581-01

IWC Portofino Automatic 37 Stainless Steel / Silver

About this watch

The IWC Portofino Automatic 37 is a stunning timepiece that perfectly balances sophistication with functionality. With its sleek stainless steel body and lustrous silver dial, this watch is designed for those who appreciate the finer things in life. The beautiful round case, measuring 37 mm in diameter, gives it an elegant yet understated presence. The closed back adds to its sleekness, making it a joy to wear without being overly flashy. The sapphire glass provides a clear view of the stunning silver dial, adorned with gem-set indexes that catch the light beautifully. At the heart of the Portofino Automatic 37 is the IWC caliber 35111 movement, an impressive feat of engineering with a power reserve of 42 hours and a frequency of 28,800 vibrations per hour. This watch offers hours, minutes, seconds, and a date function, making it not just a pretty face but also a practical companion for everyday use. The stainless steel construction adds to its aesthetic appeal while ensuring durability. The comfort of a watch is just as important as its looks, and the Portofino does not disappoint with its high-quality leather strap that feels soft against the skin. The adjustable strap ensures a perfect fit, making it comfortable for long hours of wear.

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Key Features

IWC caliber 35111 automatic movement
37mm stainless steel case
Sapphire glass crystal
30m water resistance
Feuille hands and gem-set indexes
42-hour power reserve

Specifications

Brand

IWC

Family

Portofino

Model

Portofino Automatic 37 Stainless Steel / Silver

Reference

IW4581-01

Movement

35111

Movement Features

Hours, Minutes, Seconds
Date

Case

Stainless Steel 37mm

Dial Color

Silver

Crystal

Sapphire

Water Resistance

Current Listings

IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200

IWC - IW459604 · $8,200

A limited edition IWC Portofino Automatic Moon Phase watch with a striking and elegant design, featuring a moon phase display and a bespoke snake-shaped solid gold rotor.

Condition: Great condition
Case size: 37.1mm diameter
Thickness: 11.3mm
Water resistance: ~50m (5 bar)

Posted at

Mar 21, 2026, 3:36 PM

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IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC - IW459402 · $4,950

This IWC Portofino Automatic Moon Phase features a blue dial in a 40mm case. It includes inner & outer IWC boxes, manual, and warranty card.

Condition: Very good, with a few microscratches on the caseback and clasp
Box set included: Yes
Warranty expiration year: 2028

Posted at

Mar 20, 2026, 10:23 AM

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IWC Portofino Automatic Moon Phase 40mm IW459402

IWC - IW459402 · $5,750

2020 IWC Portofino Automatic Moon Phase in 40mm stainless steel with blue dial and moon phase display.

Condition: Very Good to Excellent pre-owned
Movement: automatic movement
Material: stainless steel
Case size: 40mm

Posted at

Mar 16, 2026, 8:11 PM

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IWC Portofino Chronograph 39mm Black Dial IW391404

IWC - IW391404 · $5,750

2021 IWC Portofino Chronograph in 39mm stainless steel features a stunning, classic combination of black dial with gold hands and markers. A slim automatic chronograph, beautifully proportioned dress watch.

Condition: Very Good to Excellent pre-owned
Year: 2021
Material: stainless steel
Size: 39mm diameter

Posted at

Mar 16, 2026, 2:22 PM

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IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200

IWC - IW459604 · $8,200

A limited edition IWC Portofino Automatic Moon Phase watch with a 37mm stainless steel case, burgundy/red dial, and moon phase display. It features an 18k 5N gold snake-shaped rotor and comes with two quick-change calfskin straps.

Condition: great condition
Case size: 37.1 mm
Thickness: 11.3 mm
Dial color: burgundy/red

Posted at

Mar 13, 2026, 9:14 PM

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IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete

IWC - IW459402 · $4,950

A blue dial IWC Portofino Automatic Moon Phase in 40mm diameter, features an automatic movement.

Condition: In very good condition, rated at 9.5/10
Caseback scratches: a few microscratches
Clasp scratches: a few microscratches
Included items: Inner & outer IWC boxes, manual, and warranty card

Posted at

Mar 13, 2026, 10:29 AM

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IWC Portofino Chronograph 39mm - Warrantly until 2030

IWC - IW391406 · $5,200

The IWC Portofino Chronograph 39 combines a classic design with sportiness in a compact case size of 39 millimeters.

Case Size: 39mm diameter
Warranty Until: 2030

Posted at

Mar 13, 2026, 10:26 AM

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IWC Portofino Automatic 40MM IW356303 Silver Dial

IWC - IW356303 · $2,080

IWC Portofino Automatic 40MM IW356303 Silver Dial is a men's watch with a mechanical automatic movement.

Condition: 90%
Size: 40mm diameter
Case material: Stainless Steel

Posted at

Apr 8, 2025, 8:48 AM

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2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401

IWC - IW516401 · $8,875

This IWC Portofino Hand-Wound Moon Phase features a silver-plated dial with a moon phase display, high-polished stainless steel domed bezel and case, and an exhibition caseback offering a clear view of the movement. It has an 8-day power reserve when fully wound and includes various functions such as hours, minutes, date, small seconds subdial, moon phase display, and power reserve indicator.

Condition: Mint
Case Size: 42mm
Material: stainless steel
Movement Type: hand-wound

Posted at

Apr 2, 2025, 5:33 PM

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