Hytera's C-earset and microphone without vox.
List of compatible walkies
Hytera: PDM680, PNC460, PNC550, PNC560
Code: 25.2101.046
Code: 25.2101.004
Code: 43.2101.073
Code: 56.2101.029
Code: 56.2101.025
Code: 80.2101.010