| 摘要 |
A earphone for comfortably fitting into the ear to listen to a personal stereo. The earphone includes a housing adapted for inserting in to an ear of a person. A speaker is adapted for reproducing sound generated by a personal stereo. The speaker is operationally coupled to the personal stereo. The speaker is mounted within the housing. A plurality of bores through the housing are adapted for equalizing air pressure between the atmosphere and the ear of the user.
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