| 摘要 |
A communication device ( 200 ) for use behind the ear comprises a housing having a first section ( 202 ) and a second section ( 206 ). A sound delivery tube ( 210 ) is coupled to the second section of the housing ( 206 ). The second section of the housing ( 206 ) rotates with respect to the first section of the housing ( 202 ) within a prescribed range of angular displacement as to allow user-definable depth adjustability of at least a portion of the sound delivery tube ( 210 ) into an ear canal ( 104 ). Optionally, the first section of the housing ( 202 ) rotates with respect to the second section of the housing ( 206 ) to provide a better fit to the shape of the head at the temporal/mastoid plate 120.
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