18-carat white gold case.
Singing bird automaton movement, hand-winding mechanical movement and push-button automaton triggering mechanism.
Self-winding mechanical movement.
Sapphire whistle system.
Power reserve of 38 hours.
Diameter 47 mm.
Numerus Clausus of 28.
Diameter 47 mm
Height 1: 15.75 mm
Height 2: 23 mm
Sapphire crystal dial with platinum Roman numerals
Jaquet Droz 615, self-winding mechanical movement, single barrel. Balance wheel with regulator screw and silicon spring. Platinum oscillating weight