Hytera's D-earset and microphone with VOX directly attached to radio.
List of compatible walkies
Hytera: AP515, AP585, BP515, BP565, AP515LF, AP525LF, BP515LF
Code: 01.2101.014
Code: 63.2101.026
Code: 04.2101.018
Code: 43.2101.054
Code: 80.2101.001
Code: 23.2101.004