RICHARD LANGE PERPETUAL CALENDAR “Terraluna” – A. Lange & Söhne
Open the video in a popin:
A portrait of Richard Lange appears.
Display: A watch in the spirit of Richard Lange.
This is followed by exquisite close-up views of a gold pocket-watch, its vibrating balance-wheel and its breathing balance-spring.
Display: He turned fine watchmaking into precision watchmaking.
The picture of the antique vibrating balance-wheel gives way – almost imperceptibly – to the vibrating balance of the RICHARD LANGE PERPETUAL CALENDER “Terraluna”. We witness the jumping of the patented constant-force escapement. A detailed view of the power-reserve indication follows.
Display: 14 days of constant precision.
Then a detail of the calendar displays.
Display: perpetual calendar.
The day-of-the-week indication jumps from Monday to Tuesday.
Display: precisely jumping indications.
We turn around the side of the case.
Display: committed to precision and serving science.
In an animation we see a multitude of stars, which deposit themselves on the large celestial disc on the movement side of the RICHARD LANGE “Terraluna”. Suddenly the moon, earth and celestial discs begin to turn in time-lapse, demonstrating the functioning of the orbital moon-phase display. From the rear view, the watch case turns over to the dial side. In a front view of the full watch-face the calendar indications change instantly from Tuesday 25th to Wednesday 26th October.