Earphones

An earphone, comprising:

• a sound production component, comprising a transducer and a housing accommodating the transducer, a sound outlet hole being provided on an inner side surface of the sound production component, the inner side surface facing an auricle of a user, the sound outlet hole being configured to transmit a sound produced by the transducer out of the housing toward an ear canal of the user, one or more pressure relief holes being provided on other side surfaces of the sound production component other than the inner side surface;
• and
• an ear-hook, configured to place the sound production component at a position near the ear canal but not blocking an ear canal opening in a wearing state;
• wherein, at least a portion of the sound production component is located at an antihelix, a distance between a projection of a rear side surface of the sound production component on a sagittal plane and a projection of an inner contour of the auricle on the sagittal plane is not greater than 8 mm, a distance between a center of the sound outlet hole and the rear side surface of the sound production component ranges from 9.5 mm to 15.0 mm, and a distance between a center of at least one pressure relief hole of the one or more pressure relief holes and the rear side surface ranges from 8.60 mm to 12.92 mm.