| 摘要 |
A high performance and extremely compact earphone is disclosed. The earphone includes a speaker unit and a case in which the speaker unit is mounted. The earphone is attachable to a cavity of a conha defined by the tragus and a confronting projection of the pinna of the ear. The earphone has a specific physical configuration such that the earphone is firmly fitted to the ear cavity by the resiliency and friction of the ear.
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