The Push-to-Talk unit is a combination of push-button system and a professional generic headset, for those who prefer the hands-on approach.  While the button is depressed, the unit sends audio.  When it is not depressed, the unit silences the microphone while remaining in listening mode. 

MAC ALL POSITIONS HEADSET (NON- REF): Use promotional code COC15 for 15% off. 

Estimated ship date: 4-6 weeks