Hytera's C-earset and microphone without vox.
List of compatible walkies
Hytera: AP515, AP585, BP515, BP565, AP515LF, AP525LF, BP515LF
Code: 43.2101.034
Code: 43.2101.070
Code: 56.2101.031
Code: 43.2101.076
Code: 56.2101.029
Code: 01.2101.014