Portugieser

IWC Portugieser IW390303

Portugieser Yacht Club Chronograph

43.5mm
Steel
Caliber 89361
Men's

The IWC Portugieser, reference IW390303. Below are the full specifications, plus what each part of the reference number means. If you own this reference and want to know what it is worth today, we buy it outright and appraisals are complimentary.

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Full specifications

Case

Case size	43.5mm
Case material	Steel
Crystal	Sapphire, convex, antireflective coating on both sides
Water resistance	60m

Bezel

Bezel type	Smooth
Bezel material	Stainless steel

Dial

Dial color	Blue
Lume	Super-LumiNova

Band

Bracelet type	Rubber strap
Bracelet	Rubber strap with folding clasp
Clasp	Folding clasp

Movement

Movement	Caliber 89361
Caliber	89361
Power reserve	68 hours
Beat rate	28800 vph
Functions	Hours, minutes, small seconds, date, flyback chronograph

Reference

Wears as	Men's

How the IW390303 compares

Side by side with the other IWC Portugieser references we document. Only the specs that actually differ are listed.

IW390303 vs IW371438

Spec	IW390303	IW371438
Case size	43.5mm	41mm
Dial	Blue	Black
Water resistance	60m	30m
Power reserve	68 hrs	44 hrs

IW390303 vs IW371445

Spec	IW390303	IW371445
Case size	43.5mm	41mm
Dial	Blue	Silver
Water resistance	60m	30m
Power reserve	68 hrs	44 hrs

IW390303 vs IW371446

Spec	IW390303	IW371446
Case size	43.5mm	41mm
Water resistance	60m	30m
Power reserve	68 hrs	44 hrs

More IWC Portugieser references

Portugieser

IW371438

Portugieser

IW371445

Portugieser

IW371446

Portugieser

IW371447

See all IWC Portugieser references ›

Common questions about the IWC Portugieser IW390303

How big is the IWC Portugieser IW390303?

The case measures 43.5mm across. Case material: Steel. Case size alone is a poor guide to how a watch wears; lug-to-lug length and how the bracelet drops off the case matter more, which is why we suggest trying one on before you commit.

What movement is in the IW390303?

Caliber 89361. Power reserve is 68 hours. It beats at 28,800 vph.

Is the IW390303 water resistant?

It is rated to 60 meters, about 197 feet. That covers brief swimming. It is not a dive watch. One caution that applies to every watch on this page: a water resistance figure describes a new watch with fresh gaskets. On a piece that is years past its last service, treat the rating as unknown until it has been pressure tested.

Does the IW390303 have a nickname?

Portugieser Yacht Club Chronograph. Collector nicknames are not official IWC names, but they are what people actually search for and what they are called across a showroom.

Does San Diego Jewelry Buyers buy the IWC Portugieser IW390303?

Yes. We buy this reference outright, and we lend against it if you would rather keep it. We are a family-owned San Diego buyer established in 2006, our appraisers are GIA-trained, and the appraisal is complimentary with no obligation to sell. You can bring it to our Gaslamp showroom at 907 Sixth Ave or start online. If you are looking to buy this reference instead, tell us and we will let you know when one comes in.

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Interested in a Portugieser IW390303?

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Own a Portugieser IW390303?

We buy this reference outright, and we lend against it. Bring it to our Gaslamp showroom or start online. Appraisals are complimentary and there is no obligation to sell.

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