IWC Portofino Automatic IW356517 40mm Stainless Steel Silver Dial Watch (Calibre 35111)
The IWC Portofino Automatic IW356517 is a slim 40mm stainless steel dress watch with a silver-plated dial, gold-tone leaf hands, and clean baton markers. It runs on the IWC Calibre 35111 automatic movement, with a power reserve of roughly 42–50 hours, and offers 3 bar / 30m water resistance for everyday splashes.
The IWC Portofino Automatic (Ref. IW356517) is a straightforward, elegant watch made for daily use when you want something classic and easy to wear. The case measures 40mm with a slim thickness around 9.3–9.5mm, so it sits flat on the wrist and slips under cuffs without effort. The design is intentionally calm: a silver-plated dial paired with gold-tone leaf (feuille) hands and baton markers, giving it a warmer, slightly dressier look than all-steel and all-silver combinations.
Inside is the IWC Calibre 35111, a reliable automatic movement known for being uncomplicated and service-friendly, with an estimated 42 to 50 hours of power reserve depending on the specific production variation. Up front, the dial is protected by a convex sapphire crystal with anti-reflective coating on both sides to improve clarity in bright light. Water resistance is 3 bar (30 meters), which covers rain and hand washing, but it’s best treated as a dress watch rather than a swim watch.
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: IW356517
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Case Material: Stainless Steel
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Case Diameter: 40 mm
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Case Thickness: ~9.3–9.5 mm
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Dial: Silver-plated
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Hands/Markers: Gold-tone leaf hands, baton markers
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Crystal: Convex sapphire glass with anti-reflective coating on both sides
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Movement: Automatic
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Calibre: IWC 35111
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Power Reserve: ~42–50 hours
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Water Resistance: 3 bar / 30 meters
Key Features
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Slim 40mm Portofino profile that wears clean and comfortable
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Silver-plated dial with warm gold-tone leaf hands for a classic dress look
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Convex AR-coated sapphire crystal for better clarity and everyday scratch resistance
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Calibre 35111 automatic movement with a practical 42–50 hour reserve
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Simple, balanced dial layout that suits office and formal wear
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30m water resistance for splashes and rain (not swimming)
