H-161 Military Radio Headset for the VIC-1 Intercom AM-1780** Tested ** These have actually been tested and are ready for use. The headsets are used, but as already stated they are tested.Item includes theHeadsetsMicControl switchThe switch has three positions, momentary Radio Talk, center listen to radio and in the intercom position both talk and listen on intercomThe microphone is noise canceling and so your lips need to be touching the mike in order to get good audioIf both co...nnectors are connected, like onto both AUDIO connectors on a PRC-25, PRC-77 or PRC-104 radio the headset will work. With both connectors connected to a radio the mode switch changes function to either the conventional Push To Talk and an Always Talking mode. This will not work with military radios with a single connector.These are designed to be used with both the intercom and radio connectors connected and the radio ground to be common with the intercom ground. This means that if only the radio connector is connected to a radio like any of the PRC-68 family, the headset will not work. HMMWV® M923 M998 M1045A2 M1123A2 M1097A2 HUMVEE®The headset in the picture is an example of what is being purchased. Note: The bailout cable is not included, but I do have some that I can sell if needed. No shipping outside of the US