IWC Portugieser IW3972-03

45mm · Red Gold · Caliber 89801 · 30m

Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" Red Gold / Silver

Brand: IWC
Full reference: IW3972-03
Also written as: IW397203
Collection: Portugieser
Case diameter: 45mm
Case thickness: 16.5mm
Lug width: 22mm
Case material: Red Gold
Crystal: Sapphire
Water resistance: 30m
Caliber: 89801
Dial color: Silver

Related references — same collection

Shared specifications help discovery; these links do not assert a predecessor or successor relationship.

IWC

Portugieser

IW3972-02

45mmRed Gold

IWC

Portugieser

IW3972-04

45mmRed Gold

IWC

Portugieser

IW397204

45mmRed Gold

IWC

Portugieser

IW3774-02

45mmRed Gold

Compare specifications

Specification	IW3972-03	IW3972-02	IW3972-04	IW397204	IW3774-02
Case diameter	45mm	45mm	45mm	45mm	45mm
Case material	Red Gold	Red Gold	Red Gold	Red Gold	Red Gold
Water resistance	30m	30m	30m	30m	30m
Movement	—	—	—	Automatic	—
Caliber	89801	89801	89801	89801	79091
Power reserve	—	—	—	68 hours	—

Sources & record notes

Displayed specifications follow the most complete source record. Other source records are retained below; conflicting values are not silently combined. WatchBase.

WatchBase ↗ · 2026-09-22 11:53:27 JST

WatchBase · IWC IW3972-03

Original collection: Portugieser

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Corrections and data limitations