3M, 7100274425, PELTOR ComTac VI NIB Hearing Defender Headset Coyote Brown, Backband, 915 MHzFeatures:Protective communication solution for clear communication in noisy environmentsNIB (Natural Interaction Behavior) wireless technology enables peer-to-peer headset communicationEnvironmental microphones for level-dependent hearing protection and auditory situational awarenessWater and dust-proof noise-cancelling microphone (IP68) for clear speech transmission in noisy and harsh environmentsAdvanced environmental listening modes (Mission Audio Profiles or MAP) that optimize the auditory experience based on specific external conditionsHelps provide hearing protection when exposed to hazardous noiseRugged 3M™ PELTOR™ Design for trusted performanceThe 3M™ PELTOR™ ComTac™ 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.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.