IWC · Portofino

Strap for IWC Portofino IW344602

The Portofino Perpetual Calendar Rose Gold / Silver takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

  • 4.8 out of 5 · 269 reviews
  • Ships in 1–3 working days
  • Worldwide shipping
  • 30-day returns
  • 12-month warranty on manufacturing defects
  • Hand-stitched in Milan

Lug width

20mm
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Lug width20 mm
Case diameter40 mm
ReferenceIW344602 (aka: IW344602)
FamilyPortofino
MovementIWC caliber 82650 Hours, Minutes, Seconds | Date, Day, Leap year, Month | Moonphase
Year2022
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 20 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Portofino Perpetual Calendar Rose Gold / Silver — watch

Your watch with our straps

Portofino IW344602 with Grand Cavalier Leather Strap Orange
Portofino IW344602 with Vintage Brown Calfskin Strap — Natural Patina
Portofino IW344602 with Brown Italian Leather Strap

Calf, Orange

Grand Cavalier Leather Strap Orange

€120

★ 4.9 · 12

1 / 86

Real photos of the strap and the case. No generated images.

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm120 / 70 mm
16.5–17.8 cm125 / 75 mm
17.9–19.0 cm130 / 80 mm
19.1–20.3 cm135 / 85 mm
20.4–21.6 cm140 / 85 mm
21.7–22.9 cm145 / 90 mm

The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.

What I'm asked about the IWC Portofino IW344602

What strap size does the IWC Portofino IW344602 take?

The IWC Portofino IW344602 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the IWC Portofino IW344602 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the IWC Portofino IW344602?

Yes, in 20 mm leather. On a 40 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the IWC Portofino IW344602?

A thin 20 mm alligator. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only

Bespoke straps for IWC, in the atelier or by video call: casatimilano.com

Updated on · by Antonio Zichichi