1. Up/down buttons at the top
  2. High quality louder speaker and microphone units provide clear audio communication 8-pin plug with easy metal clip at the top
  3. Built-in PTT and microphone is very handy
  4. Talk and listen without ever HOLDING your radio/transceiver
  5. Compatible With: ICOM HM-36 Microphone IC-718 IC-7000 IC-7200 IC-7600 IC-7800