The invention relates to a watch provided with a clockwork comprising a ringer whose actuation is controlled from the watch outside by means of a control unit, a dial plate (16) comprising an opening, a shutter (10) movable between a first position, in which it covers said opening and a second position, in which it leaves the opening free. The inventive control unit (12) is arranged in such a way that it enables the shutter to be moved from the first to the second position thereof when the ringer is actuated.