In the second embodiment, a circuit for transmitting the operation signals between {TAIL ~ the operating unit} 32 and the mobile phone 10 may be constructed such that the operation signals are transmitted via {HEAD ~ the shaft} 36 
In the second embodiment , a circuit for transmitting the operation signals between { TAIL ~ the operating unit } 32 and the mobile phone 10 may be constructed such that the operation signals are transmitted via { HEAD ~ the shaft } 36
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH