| CPC H04R 25/505 (2013.01) [G10K 9/13 (2013.01); G10K 9/22 (2013.01); G10K 11/175 (2013.01); G10K 11/178 (2013.01); G10K 11/26 (2013.01); H04R 1/025 (2013.01); H04R 1/10 (2013.01); H04R 1/2811 (2013.01); H04R 1/2849 (2013.01); H04R 1/288 (2013.01); H04R 1/345 (2013.01); H04R 9/066 (2013.01); G10K 2210/3216 (2013.01); H04R 1/2876 (2013.01); H04R 17/00 (2013.01); H04R 2460/13 (2013.01)] | 20 Claims |

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1. An earphone, comprising:
a sound production component including a housing and a transducer, the transducer residing inside the housing and being configured to generate vibrations, the vibrations producing a sound wave inside the housing; and
an ear hook, in a wearing state, the ear hook being used to place the sound production component at a position near an ear canal but not blocking the ear canal, wherein
the housing is provided with a sound outlet on an inner side surface towards the auricle for transmitting the sound wave inside the housing through the sound outlet to the ear canal and to surrounding environment, and a distance between a projection point of a center of the sound outlet on a sagittal plane and a projection point of a midpoint of an upper boundary of the inner side surface on the sagittal plane is in a range of 10.0 mm to 15.2 mm.
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