The IWC Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" is a true feat of technology. It's the latest addition to the Portuguese watch collection and stands out for its innovative digital date and month display. Not only does it have a perpetual calendar and a large date display, but also a leap year indicator, a flyback chronograph, and the impressive 89801 calibre with its efficient double-pawl winding system and quick-action switch. Only 25 pieces of this platinum digital perpetual calendar are available, making it a highly coveted timepiece.