superluminova coated markers and hands for increased night-time visibility. blue parachrom hairspring with a breguet overcoil - up to 10 times more resistant to shocks and insensitive to magnetic fields. the start/stop pusher located at two starts and stops the countdown. the reset pusher located at four has three functions: programming, synchronising and setting the countdown. with one hand, the user can rapidly program the countdown. likewise, he can start, stop, set or synchronize it, while it is in progress, to the official countdown with a simple press of a pusher. to time the start of a regatta, press the start/stop pusher to start the countdown. at the end of the countdown, the minute hand stops by itself at 0. the seconds hand continues to turn. if necessary, to synchronize the countdown, at the time of the official signal, sound or visual: press the reset pusher briefly and firmly. the minute countdown hand repositions itself to the nearest minute, while the seconds countdown hand returns to 0. when the reset pusher is released, the minute countdown hand and the seconds countdown hand are automatically activated. to stop the countdown, press the start/stop pusher. to set the countdown, ensure that the countdown is stopped. press the reset pusher. the minute countdown hand returns to the minute programmed at the last setting and the seconds countdown hand returns to 0.