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In 2004, Blancpain introduced a groundbreaking timepiece - the Equation du Temps Marchante - that redefined the boundaries of watchmaking innovation. Breaking away from tradition, Blancpain's master craftsmen successfully integrated the elusive and intricate running equation complication into a wristwatch, a feat previously reserved for larger timepieces like clocks and pocket watches. To achieve this remarkable milestone, Blancpain designed a pioneering gear train featuring a sophisticated differential mechanism. This innovative setup harmoniously merges the operation of the equation gear train, controlled by a complex-shaped cam, with the watch's civil minutes-hand train to drive the running equation hand seamlessly. Caliber 3863 further enhances the functionality with a plus/minus scale equation display. Setting the standard for horological excellence, the Equation du Temps Marchante combines the dual equation displays with a novel retrograde moon phase indication and a comprehensive perpetual calendar. The movement's exquisite decoration pays homage to this achievement, showcasing meticulously hand-carved bridges and a winding rotor adorned with an artist's rendition of the sun. Embodying elegance and sophistication, reference 6638-3431-55B boasts a luxurious red gold case and a grand feu enamel white dial, exuding a timeless allure that sets it apart as a true masterpiece in the world of haute horlogerie.
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