[. . . ] [. . . ] The chrono functions will automatically cease if not used within two hours. 77 Functions/Settings Skin Chrono Add function Start Readjustment Read Restart Read Reset Adjusting the chronograph (ex: after battery change or a hard shock): Press. . . P1 to read the additional time (repeat these two steps as many time as you wish). The watch will acknowledge this procedure with a revolution on all displays. If P1 + P2 are not pressed within 5 seconds, the watch will carry out the acknowledgement function automatically. 78 [. . . ] [. . . ]