FDP Pro Wired Earpiece Mike with VOX Switch and Volume Control
Fits FDP Pro radio.
PTT (push to talk), VOX Switch, Volume Control and Collar Clip on Mike Piece.
The earpiece has an earhook/clip, and larger speaker element. These are surprisingly comfortable and secure, and a popular type in europe.
Because the speaker is on the outer of the ear, it still allows the operator to hear out of that ear, to what is going on around them.