Villeret Équation du Temps Marchante

The running equation of time shows the difference between mean solar time (the standard 24-hour day) and true solar time (based on the sun’s actual position), caused by Earth’s orbit and tilt. This rare complication tracks daily variation with astronomical precision and elegance.

A moon phase complication tracks the 29.5-day lunar cycle with a rotating disc beneath the dial, driven by a 59-tooth wheel. It blends function with poetry. Blancpain is renowned for refining this feature, combining precision, tradition, and elegance in every moonlit display.

A small seconds complication refers to a watch design where the seconds are displayed on a smaller subdial, typically positioned away from the center of the main dial. This feature adds a touch of elegance and precision to the watch, distinguishing it from those with a central seconds hand.

A perpetual calendar is a highly sophisticated watch complication designed to automatically adjust for the varying lengths of months and leap years, ensuring the correct date is displayed perpetually. This means the watch can accurately show the date without manual correction for decades, even accounting for leap years.