The 3MT PELTORT ComTacT VI NIB Headset is a reliable, rugged solution you can count on. With noise-canceling microphones, high fidelity speakers, and advanced digital signal processing, the ComTac VI headset provides a premier listening and communicating experience, both in and out of noise. New with the 3MT PELTORT ComTacT VI Headset: Natural Interaction Behavior (NIB): Short-range, headset-to-headset communication in high noise environments without the use of an external communications radio. The NIB function allows for 4 team members to speak simultaneously and over 60 people to listen within a 5 meter radius. Audio transmit is activated by either a voice activated switch (VOX) for hands-free operation or by a push-to-talk button. A tactile button on the left ear cup easily allows the user to turn the VOX function on or off. Mission Audio Profiles (MAP): Advanced environmental listening settings that optimize the amplitude and frequency for specific conditions. The Mission Audio Profiles have been designed with a variety of combat and combat support operations in mind. The environmental listening feature, also known as “Talk-Through”, uses a proprietary digital audio circuit that allows safe audio sounds to bypass the hearing protection while still helping protect against harmful noises. 23 dB, 20 dB, 21 dB, 22 dB. 30 hours (NIB), Approx. Disposable AAA, Rechargeable AAA. Communication via External 2-Way Radio. Integrated Communication, Wired, Wireless. NIB (Natural Interaction Behavior). 864 MHz & 915 MHz (NIB).