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IWC IW371617
IWC

Portugieser Chronograph

Ref. IW371617

The IWC Portugieser Chronograph IW371617 is a refined timepiece blending classic design with modern chronograph functionality. Notable for its elegant aesthetics, it features a self-winding movement with a column-wheel chronograph mechanism, a hallmark of precision and craftsmanship. The Portugieser line is celebrated for its clean dial layout and historical significance, originally inspired by marine chronometers.

crystalSapphire crystal (front and caseback)
braceletStainless steel bracelet with butterfly folding clasp
movementSelf-winding chronograph movement, column-wheel design, 46-hour power reserve, 28,800 vph (4 Hz)
functionsChronograph
dial colorBlue
case diameter41.0 mm
case materialStainless steel
water resistance30m

A registered IWC IW371617 carries a permanent RGATT passport: origin, history and owners, verifiable by anyone, and a documented history makes a watch easier to sell.

RGATT

The permanent registry for watchmaking. Provenance you can verify, trust you can transfer.

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RGATT is a provenance registry, not a place to buy or sell watches

RGATT operates a provenance and traceability registry for fine watches. It does not list watches for sale, is never a party to a sale agreed between members, and never holds, escrows or moves funds relating to such a sale. Registration establishes the authenticity of a piece as a best-efforts obligation and is not a warranty of its condition. A clean result in the stolen registry means no theft report matches, not that a watch is guaranteed free of any claim.

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