IWC Portofino Automatic IW356505 40mm Stainless Steel Watch with Milanese Mesh Bracelet
TL;DR: The IWC Portofino Automatic IW356505 is a clean, classic 40mm dress watch in polished stainless steel, with a silver-plated dial, date at 3 o’clock, and an automatic movement offering about 42 hours of power reserve. It’s paired with a stainless steel Milanese mesh bracelet for a snug, refined fit.
The IWC Portofino Automatic (IW356505) is all about timeless simplicity. The case is 40.0mm and just 9.2mm thick, so it slides under a cuff easily and wears comfortably for long hours. The silver-plated dial with Roman numerals at 12 and 6 keeps it elegant and familiar, while the date window at 3 o’clock adds everyday practicality without disrupting the clean layout.
Inside, this reference is typically fitted with IWC Calibre 35111 (and on some production years, you may see Calibre 35110), both being reliable automatic movements with around a 42-hour power reserve. The biggest visual and comfort upgrade here is the Milanese mesh bracelet, which gives the watch a more “jewelry-like” finish than a standard strap and tends to sit very securely on the wrist. Water resistance is 3 bar (30m), which is fine for daily splashes but not something you’d take swimming.
Specifications
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Brand: IWC Schaffhausen
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Collection: Portofino
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Model: Portofino Automatic
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Reference: IW356505
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Case Material: Polished stainless steel
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Case Diameter: 40.0 mm
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Case Thickness: 9.2 mm
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Dial: Silver-plated
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Dial Details: Roman numerals at 12 and 6 o’clock
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Date: Date display at 3 o’clock
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Movement: Automatic (self-winding)
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Caliber: IWC 35111 (or 35110 depending on production year)
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Power Reserve: Approx. 42 hours
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Bracelet: Stainless steel Milanese mesh
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Water Resistance: 3 bar / 30 meters
Key Features
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Slim 40mm x 9.2mm polished steel case that wears clean and comfortable
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Classic Portofino design that suits office, formal, and everyday outfits
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Silver-plated dial with Roman numerals (12 and 6) for a timeless look
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Practical date at 3 o’clock for daily use
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Reliable automatic movement with about 42 hours of reserve
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Milanese mesh bracelet for a refined finish and a secure, snug fit
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30m water resistance suitable for splashes and rain (not swimming)
