3M/Peltor, ComTac VI Defender, Electronic Earmuff, Matte Finish, Olive Drab Green, NIB (Natural Interaction Behavior) Wireless Technology, Includes Boom Microphone MT20H682FB-09NGNS. 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. Water and dust-proof noise-cancelling microphone (IP68) for clear speech transmission in noisy and harsh environments. Rugged 3M PELTOR Design for trusted performance. Environmental microphones for level-dependent hearing protection and auditory situational awareness. Advanced environmental listening modes. 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). Black, Coyote Brown, Green. 864 MHz & 915 MHz (NIB). Armed Forces, First Responder, Law Enforcement, Military & Police, Security. Foldable Headband, Helmet Mount, Neckband. US Federal Government Only. EClass 14 Classification Group.