The 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.Features : 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