Portofino Automatic Chronograph 42mm Stainless Steel and Alligator Watch, Ref. No. IW391008

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Editor's Notes

Since its launch in 1868, IWC SCHAFFHAUSEN has built a reputation for crafting top-flight professional instruments - but it’s not all utility at the factory, as proven by this alligator-strapped 'Portofino Chronograph’ watch, designed to mark every passing second with precision and clarity. It's powered by an automatic movement encased in gleaming stainless steel, fitted with an anti-reflective sapphire crystal glass lens and has a slick black face with rhodonised indices.

We offer an eight-year warranty for all working parts and manufacturing faults for IWC SCHAFFHAUSEN watches. For more information, contact one of our experts by emailing

Technical Specification
  • Swiss-made calibre 75320 automatic chronograph movement with 44-hour power reserve
  • 25 jewels, 28,800 Vph


  • Hour and minute hands, second subdial
  • Day and date windows
  • Chronograph: sweep second hand, 30-minute and 12-hour subdials


  • Black dial
  • Rhodium-plated hands and indices


  • Stainless steel case
  • Crown for day, date and time adjustments and manual winding
  • Sapphire glass crystal
  • Pin buckle-fastening black alligator strap


  • Case diameter: 42mm; case thickness: 13.6mm; lug width: 20mm
  • Water resistance: 3 bar
  • Comes in a presentation box
  • Alligator: USA
  • Reference number: IW391008
  • Made in Switzerland
Product Code 16301891330333020

Returns or Exchanges

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