Hearing Aid

FIG. 1 is a perspective view of a hearing aid, showing my new design;

FIG. 2 is a left view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view.

The portions of the hearing aid shown in broken lines form no part of the claimed design.