The Calibre 791 is a column wheel chronograph movement, as evidenced by its smooth pusher action, with a 4Hz beat rate and a 68-hour power reserve. It has a silicon balance spring (alongside numerous other anti-magnetic parts) and is COSC-certified with a central chronograph hand and two sub-dials: a running seconds and a 30-minute register. However, its most exclusive function is the "flyback." This allows the user to restart the timer while the chronograph is running and without first stopping and then resetting the chronograph hand. This allows for split second timing accuracy.