| 摘要 |
PROBLEM TO BE SOLVED: To obtain a portable radio communication apparatus that a user can use without feeling unpleasant nor disgusting. SOLUTION: The portable radio communication apparatus 101 comprises a radio communication device 102, a microphone 104, a vibration actuator 103, and a cap or helmet type holder 109a; and the vibration actuator 103 is arranged in contact with a specific position of the head of the user and the vibration of the vibration actuator 103 is transmitted to the head.
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