IWC Portofino Chronograph Watch Manual
The Portofino Chronograph brings a sporty touch to the Portofino family. The striking push-buttons are reminiscent of the cockpit of 1960s Italian sports cars. The watch, which features a convex sapphire glass and appliquéd Roman numerals, is driven by the time-tested automatic 75320 calibre with its 44-hour power reserve.
Download IWC Portofino Chronograph Reference 3910 Watch Operating Instructions
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