The dial of the Léon collection makes the passage of time visible. Its hemispherical hour markers evoke the precise trajectory of the pendulum, while the lacquered surface, in a brown or grey gradient, reveals different intensities depending on the viewing angle.

At the heart of the watch, the Miyota 9015 automatic movement offers a 42-hour power reserve. Its transparent case back reveals the engraved oscillating mass, a tribute to the genius of Léon Foucault and his famous Pendulum.