FIG. 1 is a front perspective view of an earphone showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof.

The portions indicated in even broken lines are for illustrative purposes only and form no part of the claimed design. The dot-dash broken lines in FIG. 2 define, but are not included in, the boundaries of the claimed design.