IWC Portofino Portofino Automatic 37 Stainless Steel / Diamond / Silver
Reference IW4581-03
About this watch
The IWC Portofino Automatic 37 (IW4581-03) is a luxurious watch that strikes a perfect balance between classic aesthetics and contemporary functionality. With its exquisite design, precision movement, and luxurious materials, this watch is not just a timekeeper; it’s a statement piece. The silver dial, adorned with stick and dot indexes, exudes a timeless charm that appeals to both traditionalists and modern aficionados. The gem-set bezel adds a touch of glamour, making it a perfect accessory for both casual and formal occasions. At the core of this watch is the IWC caliber 35111 movement, an automatic workhorse developed based on the Sellita SW300-1, featuring hours, minutes, seconds, and a date function. The analog display further enhances the classic vibe of the watch, making it easy to read at a glance. With a water resistance rating of 30 meters, this watch is suitable for everyday wear, including splashes of water and light rain. Its lightweight design and slim profile make it incredibly comfortable to wear throughout the day.
Buy Now on Jomashop
This is an affiliate link
Key Features
- IWC Caliber 35111 Movement
- Stainless Steel Case with Gem-Set Bezel
- Sapphire Glass Crystal
- 30m Water Resistance
- 37mm Diameter and 9mm Height
- Analog Display with Date Function
Specifications
- Brand
- IWC
- Family
- Portofino
- Model
- Portofino Automatic 37 Stainless Steel / Diamond / Silver
- Reference
- IW4581-03
- Movement
- 35111
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 37mm
- Dial Color
- Silver
- Crystal
- Sapphire
- Water Resistance
- 30
Current Listings

Pre-Owned IWC Portofino Automatic Edition '150 Years' IW356518
This pre-owned IWC Portofino Automatic Edition '150 Years' is a limited edition of 2,000 pieces. It features an automatic movement, 40mm stainless steel case, blue dial, and black leather strap.
- Condition: 81% - with marks on the lugs, bezel, and case
- Movement: Automatic
- Case size: 40mm diameter
- Material: Stainless Steel
IWC Portofino Black Dial Bracelet 40mm IW356506
This IWC Portofino Black Dial 40mm IW356506 is a men's watch with mechanical automatic movement, stainless steel case and date function.
- Condition: 90%
- Case Size: 40mm
- Movement Type: Mechanical Automatic
IWC Portofino Automatic White Dial 38mm IW353303
- Condition: 90%
- Model: Portofino Automatic White Dial 39MM IW353303
- Size: 38mm
- Case material: Stainless Steel


Pre-Owned IWC Portofino Automatic Edition '150 Years' IW356518
A pre-owned IWC Portofino Automatic Edition '150 Years' watch with a blue dial, automatic movement, stainless steel case, and black leather strap. Limited to 2,000 pieces.
- Condition: Pre-owned, in 81% condition due to marks on the lugs, bezel, and case; strap is in 87% condition
- Case size: 40mm diameter
- Water resistance: 30 meters depth rating
- Material: Stainless Steel
IWC Portofino Automatic 40MM IW356303 Silver Dial
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

2024 IWC Portofino Hand-Wound Moon Phase Silver Steel FULL SET MINT IW516401
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
IWC Portofino 18K Rose Gold Grey Dial Eight Days 45mm IW510104
The IWC Portofino is a men's watch featuring a grey dial and 18K rose gold case, with a size of 45mm. It has a mechanical manual movement and functions include date and power reserve.
- Condition: 90%
- Case material: 18K Rose Gold
- Movement type: Mechanical Manual
- Size: 45mm
IWC Portofino Hand-Wound 8 Days Hand-Wound Black Steel 45mm IW510102 Strap
The IWC Portofino Hand-Wound 8 Days is a pre-owned watch with a black steel case, featuring an IWC hand-wind movement and 45mm diameter. It comes with an IWC box, papers, and a brown leather strap.
- Condition: Excellent
- Case material: Stainless Steel
- Crystal type: Sapphire
- Movement type: Hand Wind