1, EM-410 electret CB microphone 2, electret portable CB microphone 3, CB mic with 4 pin 5 pin 6 pin RJ 12 RJ ... specifications :1, EM-410 electret CB microphone 2, electret portable CB microphone3, CB mic with 4 pin 5 pin 6 pin RJ ... length : 2.3m5,WIth up/ down button on the top for radio frequency turning 6, OEM acceptable parameter.B Microphone microphones for CB ...