A cover member is made of a crystalline material, and includes a first main surface that faces a display surface of a display, and a second main surface opposite to the first main surface. A vibration element produces flexural vibrations, and is disposed on the first main surface of the cover member. The cover member is bent in a second direction more easily than in a first direction from the viewpoint of anisotropy of a crystalline structure of the crystalline material. The first direction is parallel to the first and second main surfaces, and the second direction is parallel to the first and second main surfaces and vertical to the first direction. The vibration element produces flexural vibrations along the second direction.