A watch (1) has a microphone (16) placed in a watchcase (2), a bracelet (3) with two end parts respectively attached to two opposite sides of the case and at least one through aperture (7) made in a lateral wall (12) of the case. The through aperture defines a first sound wave guide channel, and opens into the case in the direction of said microphone. The microphone is connected in the case to a sound wave processing unit circuit (19) for voice recognition. The watch further includes an audio guide member (6) fitted with a second open sound wave guide channel that comes into direct contact with the external surface of the lateral wall of the case across an area (13) that extends on either side of the aperture so as to guide the sound waves towards said first channel. This guide member may be made in an end part of the bracelet. In this manner, any interference from reflecting cavities, edges or surfaces in said area close to the aperture can be removed or attenuated.