It scatters numerals over the dial in the random manner, after which you can, with switchblade velocity, flicks the hour around to the correct numeral, wherever it lays. This is something to behold. There is a purpose it’s the complication that set Franck Muller on the map. Some noteworthy functions: https://www.watchesworld.com/our-watch-picks-for-a-stylish-spring/