A crown-push-button (3) provided with a spring (10) disposed within a cage (11) integral in rotation with the movement of the head (4) of the crown-push-button (3), the spring (10) being arranged within the cage (11) so as to be rotated with the cage. The base (13c) of the spring cage is provided with cells (18) cooperating with protuberances (17) formed in a washer (14) disposed on the seat (6a) of the tube (6) of the crown-push-button, the rotation of the crown-push-button being then accompanied by a click as the protuberances (17) pass in the cells (18), which allows the user to ensure that the desired functions have been activated.