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The Portofino Chronograph takes its design cues from the 1960s, with elegantly sporty push-buttons and chronograph displays. The stainless-steel chronograph with a silver-plated dial has a convex sapphire glass and rhodium-plated appliqués. It is powered by the tried and tested self-winding 75320 calibre with its 44-hour power reserve. The IWC IW391028 has an automatic movement with 44 hours of power reserve, Silver dial colour and Steel bracelet.
