Watch Glossary
1104 horological terms explained
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Perpetual CalendarComplications
Mechanism that automatically adjusts for months with different numbers of days without manual correction until year 2100.
Petite SonnerieComplications
Simplified striking complication that chimes hours and quarters but only on demand.
PlanisphereComplications
Rotatable star chart on watch dial showing constellations visible from any date and time.
Power Reserve IndicatorComplications
Display showing remaining energy stored in the mainspring, indicating when rewinding is necessary.