Abstract: The present disclosure provides an earphone. The earphone includes a sound generation portion including a first housing, a second housing, and a speaker assembly. The speaker assembly includes an annular support assembly and two sets of vibration assemblies. The two sets of vibration assemblies respectively include protrusion portions protruding beyond the annular support assembly along an axial direction and arranged opposite to each other. The speaker assembly cooperates with the first housing and the second housing to form two first acoustic cavities around two protrusion portions. The annular support assembly has a middle dividing plane perpendicular to the axial direction, and the first housing is provided with two pressure relief holes spaced apart from each other on two sides of the middle dividing plane and respectively connect the corresponding first acoustic cavities with an external environment.

Abstract: A clip-on earphone is provided, including a sound production portion, an abutment portion, and an ear hook connecting the sound production portion and the abutment portion. The ear hook has an ear hook symmetry plane along a length direction thereof, when the clip-on earphone is in a natural state, on the ear hook symmetry plane, the clip-on earphone has a reference tangent, a contour line of the sound production portion and a contour line of the abutment portion are respectively tangent to the reference tangent. The contour line of the sound production portion and the contour line of the abutment portion are located on a same side of the reference tangent. An inner contour line of the ear hook has a first reference point farthest from the reference tangent, and a reference perpendicular drawn from the first reference point to the reference tangent passes through the abutment portion.