FIG. 1 is a front perspective view of a first embodiment of an ornamental design for a speaker microphone;
FIG. 2 is a rear perspective view of the first embodiment thereof;
FIG. 3 is a front view of the first embodiment thereof;
FIG. 4 is a rear view of the first embodiment thereof;
FIG. 5 is a first side view of the first embodiment thereof;
FIG. 6 is a second side view of the first embodiment thereof;
FIG. 7 is a top view of the first embodiment thereof; and
FIG. 8 is a bottom view of the first embodiment thereof.
FIG. 9 is a front perspective view of a second embodiment of an ornamental design for a speaker microphone;
FIG. 10 is a rear perspective view of the second embodiment thereof;
FIG. 11 is a front view of the second embodiment thereof;
FIG. 12 is a rear view of the second embodiment thereof;
FIG. 13 is a first side view of the second embodiment thereof;
FIG. 14 is a second side view of the second embodiment thereof;
FIG. 15 is a top view of the second embodiment thereof; and,
FIG. 16 is a bottom view of the second embodiment thereof.
The broken lines shown in FIGS. 1-16, that are immediately adjacent to the shaded areas, and define the unshaded regions, are for illustrative purposes only; the portions shown in broken lines form part of the article but do not form a part of the claimed design.