This is the most complex wristwatch IWC has ever made. It combines a perpetual calendar, astronomical display, and a constant force tourbillon that displays running seconds and guarantees a regular, precise rate for at least 48 hours. The complex perpetual calendar, sunrise/sunset indicators, a sidereal time display, and the large tourbillon complete this masterpiece.
This watch’s many features distinguish it from others in its price range. It is self-winding and has displays for month, day and date, moon phases and also leap years. The 18-karat gold case has a sapphire glass back revealing the inner workings of all 740 pieces of the watch. Since starting business in 1735 in Villeret, Switzerland, Blancpain has never and will never make a quartz watch or one with a digital display.