The 3MPELTORComTacVIII Headset helps protect your hearing and can help promote auditory situational awareness and communication in challenging acoustical environments. Some versions are equipped with a downlead cable for connection to a radio via a push-to-talk (PTT), and a noise cancelling speech microphone for communication in noise. Key FeaturesEnvironmental listening for auditory situational awarenessHearing protection to help protect from impulse and steady state noiseAdvanced listening mode featuring Mission Audio Profiles (MAP) to maximize audibility based on the acoustical environmentNoise-cancelling speech microphone (IP68) for communication in noise (select models)Earplug mode to help maintain auditory situational awareness when used in combination with earplugsSoundscaping to help with radio communication speech intelligibilityTested in accordance with applicable sections of a variety of military and other standards Environmental Listening Function