Back around 1991, as Martin Braun was completing the requirements to become a master watchmaker, he had the brilliant idea for his first innovative complication: a unique display of the times of sunrise and sunset. Almost a decade later, the talented horologist developed the complication and placed it into a watch bearing his own name.
Braun has always been fascinated by reducing natural astronomical occurrences to the miniature stage provided by a mechanical display, using nature as his model.
This month, Martin Braun will celebrate half a century on this planet. Though he did not expressly say he created the Tourbillon Astronomique for any particular reason, I almost suspect he was giving himself a huge birthday gift to celebrate this life milestone.
The functions include: display of sunrise and sunset customized to the wearer’s geographical location, display of zodiac and season, date, equation of time, retrograde moon with moon phase display, day/night indication, power reserve, declination (in degrees and graphically), polar shadow line, and a one-minute tourbillon.