ECHO,Delay 600M/S SPEC.IMPEDANCE :1k ΩSENSITIVITY :-25d at 1K HzFREQUENCY RESP. :150~3500HzECHO FREQUENCY RESP. :200~3000HzECHO TIME:300m seconds maxSPEACIAL FEATURE:Relay system roger beep circuit,roger beep transmission time:0.4-1sCORD: 3M coil cord CB Microphone CDM-2000