UN-155

This self-winding movement featuring a regatta chronograph debuted at SIHH 2017. It allows for a maximum 10-minute countdown that transitions immediately into a timing phase and is composed of 650 components with 72 jewels. The central regatta mechanism utilizes an arrow to indicate the countdown on a yellow scale from 0 to 10, which is adjusted via a pusher at 10 o'clock and rotates counterclockwise; the chronograph seconds hand also moves counterclockwise until the race begins, at which point it switches to clockwise movement to track the race duration on the 6 o'clock subdial.