To celebrate the 40th anniversary of its first quartz movement, the ultra-flat 7P calibre, Piaget created a concept watch combining a mechanical calibre and a high-frequency quartz oscillator, in the pursuit of maximum precision. The two cores of the movement are positioned on the dial side. These are the micro-rotor of the automatic winding and the time train wheel regulated by the quartz oscillator so that it completes precisely 5.33 revolutions per second based on the 32,768 Hz frequency of the quartz. The coussin case is in 18-carat white gold, combined with a gold bezel coated with black ADLC. Limited edition of 118 pieces.
