IWC Portofino Portofino Chronograph MecaQuartz Stainless Steel / White / Calf
Reference IW3731-05
About this watch
The IWC IW3731-05 Portofino Chronograph MecaQuartz is a stunning timepiece that beautifully blends tradition with modern technology. Its elegant design, innovative movement, and practical features make it a remarkable example of what IWC has to offer. The watch's sleek stainless steel case glimmers under light, while the white dial offers perfect contrast for readability. The rounded shape and minimalist aesthetic make it a versatile accessory suitable for both formal and casual occasions. At its core lies the remarkable Jaeger-LeCoultre caliber 631, often referred to as the 'MecaQuartz.' This movement combines quartz accuracy with mechanical chronograph functionality, resulting in impeccable precision. With functions for hours, minutes, small seconds, and a date display, this watch is more than just a pretty face. The chronograph allows you to time events with ease, making it practical for everyday use. The watch features stick hands that glide smoothly over the dial, providing a classic look that matches its overall aesthetic. A high-quality calf leather strap complements the watch's elegance while ensuring a comfortable fit. With a water resistance rating of 30 meters, this watch is suitable for daily wear but not designed for diving adventures.
Buy Now on Jomashop
This is an affiliate link
Key Features
- Jaeger-LeCoultre caliber 631 movement
- Sleek stainless steel case
- White dial with stick and dot indexes
- Chronograph functionality
- High-quality calf leather strap
- Water resistance up to 30 meters
Specifications
- Brand
- IWC
- Family
- Portofino
- Model
- Portofino Chronograph MecaQuartz Stainless Steel / White / Calf
- Reference
- IW3731-05
- Movement
- 631
- Movement Features
-
- Hours, Minutes, Small Seconds
- Date
- Chronograph
- Case
- Yellow Gold 35mm
- 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 $8,200](https://preview.redd.it/80x0mtozagqg1.jpg?width=640&crop=smart&auto=webp&s=6d3dac0581daef467e76a9ff4668ba986e76aa86)
IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $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)
![[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete](https://preview.redd.it/tps1ijf3m7qg1.jpg?width=640&crop=smart&auto=webp&s=f7705ed146eee2bc0c0cc25fed330b6ab77ea620)
IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete
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
![[WTS] IWC Portofino Automatic Moon Phase 40mm IW459402](https://external-preview.redd.it/z6IRij-KJNcfSP-dwPiSxGyZ-adVXW6tlNj9TjZzNYA.jpeg?auto=webp&s=b92a9b8ec47f0af3f7593c192b2442df0463f4c4)
IWC Portofino Automatic Moon Phase 40mm IW459402
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
![[WTS] IWC Portofino Chronograph 39mm Black Dial IW391404](https://external-preview.redd.it/nPd1XolSueUQxMiM6umpk20nieqF3xhrdZaNYln31mE.jpeg?auto=webp&s=f5453238a75bb71bec339b92915d73dc1da80071)
IWC Portofino Chronograph 39mm Black Dial IW391404
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
![[WTS] IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $8,200](https://preview.redd.it/wxkkeb51wwog1.jpg?width=640&crop=smart&auto=webp&s=cf3babd0b3218fdfde98a53c40a831d5a9ff08a1)
IWC Portofino Automatic Moon Phase Limited Edition Year of the Snake Ref IW459604 37mm Full Kit 2025 $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
![[WTS] IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete](https://preview.redd.it/b08jlyjwotog1.jpg?width=640&crop=smart&auto=webp&s=64eb1f0d8d271f9c4a61efbc8ae853c39c2c6861)
IWC Portofino Automatic Moon Phase 40mm Blue Dial IW459402 Complete
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
![[WTS] IWC Portofino Chronograph 39mm - Warrantly until 2030](https://preview.redd.it/cr8pav61otog1.jpg?width=640&crop=smart&auto=webp&s=743b6249176480600be6a2478b7815204956dbbc)
IWC Portofino Chronograph 39mm - Warrantly until 2030
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
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