This is the first mechanical watch in the world to feature a memory function,

The Memoire 1 has a dial with hands for minutes and seconds and a disk to show hours. There is a push button in the crown which allows you to switch from “Time” to “Chrono” mode. The hands and hour disk switch to measure time and then back to a normal watch with the press of the button. You can even toggle back and forth while the chronograph is running.