584P Black Movement
The 584P self-winding mechanical movement stands out with its extremely precise large astronomical moon which only varies by one day every 122 years. With its understated, pure design, the 584P calibre displays the hours, minutes and seconds in the centre as well as the moon phases in a large opening at 12 o'clock. It is also fitted with a black oscillating weight decorated with coat-of-arms, and a balance stop. Traditional decorations, circular Côtes de Genève, circular-grained mainplate, bevelled bridges and blued screws complete this reliable and robust movement, while featuring the distinctive Piaget touches.