The mark consists of a three-dimensional configuration with a horizontally long and slightly flat three-dimensional shape of a substantially rectangular parallelepiped (hereinafter referred to as the "main body"), and the color that can be recognized in the substantially black color (including the color to be recognized as metallic/plastic luster or matte texture, on the surface of the main body (hereinafter referred to as the "top surface"), and the multiple three-dimensional shapes of round or approximately square knobs, dials, switches or buttons (hereinafter referred to as "knobs") arranged on the top surface, and each of the colors in orange, white, black, red or yellow that are applied to these, and horizontally elongated rectangular figures depicted in light tan, with the plurality of them being arranged side by side in two rows in the center of the top surface, and pattern composed of a substantially light gray shape that is substantially concave over the entire length at the bottom of the top surface. The dotted lines in the drawing represent elements that are not claimed as a feature of the mark.