Hytera's C-earset and microphone without vox.
List of compatible walkies
Hytera: PDM680, PNC460, PNC550, PNC560
Code: 63.2101.026
Code: 63.2101.060
Code: 25.2101.049
Code: 46.2101.010
Code: 43.2101.015
Code: 43.2101.042