
Piaget 642P manufacture ultra-thin hand-wound mechanical flying tourbillon movement with moon phase. This rectangular caliber displays hours, minutes, seconds, and an astronomical moon-phase at 6 o'clock, utilizing a titanium carriage and a flying tourbillon at 12 o'clock. Operating at 21,600 vph (3 Hz) with a 40-hour power reserve, it contains 23 jewels and 175 components in a 4mm thick, 28.6 x 22.4mm housing, featuring circular Côtes de Genève, hand-bevelled bridges, and circular-grained plates.