| 摘要 |
PROBLEM TO BE SOLVED: To provide a headset for portable telephone set or PHS (R) telephone set, which enables a user to make a hands free speech regardless of whether the user is in an automobile, on a bicycle or walking, by being attached to a portable telephone set or PHS (R) telephone set. SOLUTION: By attaching the headset to a portable telephone set or PHS (R) telephone set (1), the hands-free call is easily and inexpensively enabled.
|
