Earphones

An earphone, comprising:

• a sound generation component including a transducer and a housing accommodating the transducer, at least a portion of the sound generation portion extending into a concha cavity of a user;
• and
• an ear hook including a first portion and a second portion, the first portion being hooked between an auricle and a head of the user, the second portion being connected to the first portion, extending toward an anterolateral side of the auricle, and being connected to the sound generation component to place the sound generation component at a position near an ear canal without blocking an opening of the ear canal;
• wherein
• the sound generation component has a first projection on a sagittal plane, and the auricle has a second projection on the sagittal plane, a centroid of the first projection having a first distance from an end point of the second projection in a sagittal axis direction, a ratio of the first distance to a width of the second projection in the sagittal axis direction being in a range of 0.48-0.6;
• and
• in a specific frequency range, the sound generation component is capable of providing sound with a maximum sound pressure of not less than 72 dB into the ear canal when an input voltage of the transducer does not exceed 0.4 V.