Apart from the hours, minutes and seconds, the regulator dial of the RICHARD LANGE PERPETUAL CALENDAR “Terraluna” also accommodates the four precisely-jumping perpetual calendar displays: date, day of week, month and leap year. The patented orbital moon-phase display can be admired through the sapphire-crystal caseback of the watch. It shows the current moon phase as well as the positions of the moon and sun as an observer in the northern hemisphere would see them. The day and night halves of this hemisphere are also discernible.
Regulator dial with offset sweep minutes, hours subdial and subsidiary seconds dial with stop seconds; perpetual calendar with outsize-date, day-of-week, month and leap-year display; orbital moon-phase display with day/night indicator for the northern hemisphere; power-reserve indicator, 14 days power reserve
Diameter: 45.5 millimetres; height: 16.5 millimetres