For its 250th anniversary, Vacheron Constantin spent more than 10,000 hours of research and development to create the most complex wristwatch ever: All housed in a 47-mm-wide case that is 17.8-mm thick, this watch has 16 complications and 834 parts. The complications include tourbillon, power reserve, second time zone, striking-mechanism torque, minute repeater, phases of the moon, perpetual calendar, sidereal time, sunrise and sunset, perpetual equation of time, day and date, month, leap-year indicator, and a sky chart custom designed to display the constellations wherever the owner lives. Inside Information: The Tour de l’Ile is an homage to the brand’s birthplace in the heart of Geneva.
