David Clark, M-55 Microphone for DC-PRO-X Headsets, p/n 09168P-66
David Clark, M-7A Electret Microphone, p/n 09168P-33
David Clark, Model M-7/DC Microphone, p/n 09168P-31
David Clark, Push to Talk (PTT) Switch, C10-15, p/n 18216G-01
