Hytera's C-earset and microphone without vox.
List of compatible walkies
Hytera: PDM680, PNC460, PNC550, PNC560
Code: 25.2101.046
Code: 56.2101.004
Code: 63.2101.026
Code: 43.2001.007
Code: 69.2101.004
Code: 01.2101.012