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