FIG. 1 is a perspective view of a headphone showing my new design, wherein the interior portion of an ear cup of the headphone is a mirror image of the interior portion of the other ear cup;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a left side elevational view thereof.
Portions of the figures that are shown as broken lines are for illustrative purpose only and form no part of the claimed design.