The Midland AVPH10 Shoulder Speaker Mic attaches to your Midland X Talker radio and then attaches to your shoulder with a rotating clip making it easy to use while its mounted on your shoulder. Just plug it into the microphone headphone port on your radio, and its ready to use. Theres an on off switch on the side of the microphone, for communication. Attaches to shoulder with rotating clip for ease of use. Push to talk button. 18 3.5mm audio jack port for earpiece not included. Dual pin connector. 360 rotatable clip. Works with Midland X Talker radios. 2 way radio NOT INCLUDED.