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: 43.2101.058
Code: 04.2101.003
Code: 43.2101.017
Code: 83.2101.001
Code: 56.2101.028
Code: 25.2101.055