FIG. 1 is a front and top perspective view of a wireless speaker, showing my new design;
FIG. 2 is a rear and top perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is an enlarged view of a portion indicated in FIG. 1.
The evenly spaced broken lines shown in the drawings depict portions of the wireless speaker that form no part of claimed design. The dash-dot broken lines depicting enlarged portions form no part of the claimed design.