IWC Portofino Portofino Automatic Day & Night 37
Reference IW4591-01
About this watch
The IWC IW4591-01 Portofino Automatic Day & Night 37 is a breathtaking timepiece that excels in both form and function. Its elegant design, combined with reliable automatic movement and thoughtful features, makes it a standout choice for anyone looking to invest in a luxury watch. The round stainless steel case is perfectly proportioned at 37 mm, making it a versatile choice for both men and women. The white mother-of-pearl dial adds a touch of luxury, while the gem-set bezel sparkles beautifully, drawing attention without being ostentatious. With its rich history, exquisite design, and practical features, this watch is a worthy investment that will serve you well for years to come. Whether you’re dressing up for a special occasion or simply want to elevate your daily attire, this watch is sure to impress.
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Key Features
- IWC caliber 35700 automatic movement
- Sapphire glass crystal with water resistance of 30 meters
- Gem-set bezel and indexes
- Feuille hands for easy readability
- 24-hour hand for global timekeeping
- Stainless steel case with 37 mm diameter
- Comfortable 11 mm height and lightweight design
Specifications
- Brand
- IWC
- Family
- Portofino
- Model
- Portofino Automatic Day & Night 37
- Reference
- IW4591-01
- Movement
- 35700
- Movement Features
-
- Hours, Minutes, Seconds, Additional 24 Hour Hand (adjustable)
- Case
- Stainless Steel 37mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 30
Current Listings
![[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850](https://preview.redd.it/zsy32d9m6k1h1.jpg?width=640&crop=smart&auto=webp&s=d5bbbdffad0e307da19b114b591daa26e009b26c)
IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $7,850
The IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake is a striking and elegant limited-edition piece that blends classic dress watch refinement with artistic flair. The 37mm polished stainless steel case paired with the rich burgundy/red dial gives this watch an eye-catching yet tasteful presence on the wrist.
- Condition: great condition
- Case size: 37.1 mm
- Thickness: 11.3 mm
- Dial color: burgundy/red
![[WTS] IWC Portofino Chronograph $3200 SHIPPED](https://preview.redd.it/w0bak8p3yi1h1.jpg?width=640&crop=smart&auto=webp&s=938a0110af7e2f339dec166329b50b2499f31d78)
IWC Portofino Chronograph $3200 SHIPPED
This IWC Portofino Chronograph features a 42 mm case without crown and 45 mm with crown. It includes the original strap and buckle.
- Condition: Pre-owned, working condition, sold as-is
- Case size: 42mm diameter
- Band type: original
![[WTS] 2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395](https://preview.redd.it/v8trb6g7u41h1.jpg?width=640&crop=smart&auto=webp&s=b066caef86802e393fe61b87ec2544f4f2f1abba)
2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395
A 2021 IWC Portofino Chronograph White, a 42mm chronograph watch featuring a white dial.
- Condition: Excellent condition with minimal signs of wear
- Year: 2021
- Size: 42mm diameter
- Contents: Box, Travel Case, International Warranty Card, Instructions Manual
![[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995](https://preview.redd.it/2xwwm0unt41h1.jpg?width=640&crop=smart&auto=webp&s=b45fa1fe2807393fa5a44e46e680cc783c1c630a)
2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995
Up for sale is a IWC Portofino Chronograph Black, a 39mm timepiece with chronograph functionality.
- Condition: New condition
- Year: 2025
- Case size: 39mm
![[WTS] 2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395](https://preview.redd.it/avlnylqo3m0h1.jpg?width=640&crop=smart&auto=webp&s=ab87546b8f29434c26ea746f02c95cb3a8387b73)
2021 IWC Portofino Chronograph White IW391027 42mm Full Set - $4,395
A 2021 IWC Portofino Chronograph White, a 42mm watch in excellent condition.
- Condition: Excellent condition with minimal signs of wear
- Case size: 42mm diameter
- Shipping method: Fedex
- Insurance included: true
![[WTS] 2015 IWC Portofino Chronograph | Complete set | Cheapp](https://preview.redd.it/834ueh548e0h1.jpg?width=640&crop=smart&auto=webp&s=8b07b0cbb7d1b67b883882b51b807043d94b7134)
2015 IWC Portofino Chronograph | Complete set | Cheapp
This Portofino is a timeless classic — elegant, refined, and versatile. The chronograph adds useful functionality without detracting from the dress-watch feel, making this a great addition for both daily wear and special occasions.
- Condition: Good pre-owned
- Case Size: 42mm
- Movement: IWC automatic chronograph
- Includes: Original IWC box, IWC warranty card, stainless steel mesh bracelet
![[WTS] 2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers](https://preview.redd.it/zvw2lh1l670h1.jpg?width=640&crop=smart&auto=webp&s=5e0cb819c83a4882ea80c14c40981fe98e0e457b)
2018 IWC Portofino Chronograph 42mm Ref IW391008 | Box & Papers
a classy IWC Portofino Chronograph in 42mm size with black dial and automatic movement
- Condition: good preowned condition with normal wear
- Movement Type: Automatic
- Power Reserve: 44 hours
- Case Size: 42mm diameter
![[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995](https://preview.redd.it/zhn4zh2tp40h1.jpg?width=640&crop=smart&auto=webp&s=0309cf974b243bb32197abac2e13781dd87c113a)
2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995
This is a brand new IWC Portofino Chronograph Black with a 39mm case size, featuring a chronograph function.
- Condition: New condition
- Case size: 39mm diameter
![[WTS] 2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995](https://preview.redd.it/791i8rt4lqzg1.jpg?width=640&crop=smart&auto=webp&s=20352f0dafacfc58f44f626b1fd2f294eb2bd818)
2025 NEW IWC Portofino Chronograph Black IW391404 39mm Full Set - $5,995
Up for sale is a new IWC Portofino Chronograph Black, a 39mm watch with chronograph functionality.
- Condition: New condition
- Year: 2025
- Case size: 39mm
- Contents: Watch,Box,Travel Case,International Warranty Card,Instructions Manual