This earphone works with the Yaesu FTA-230 radio. Simply plug one end into the headphone jack and place the ear bud in your ear. Does not include a microphone. Will NOT work with the FTA-250, FTA-450L, FTA-550AA, FTA-550L, and FTA-750L.
Will also work with the SSM-10A speaker mic. Yaesu part number SEP-10A.