Clear and reliable communication is critical to the success of any operation. Peltor's latest electronic talk-thru headset combines our most sophisticated surround sound listening electronics with a new slim-line profile cup design. - MICH, PASGT and ACH helmet compatible - Advanced talk-thru electronics Comtac II headset, the 2nd generation of the famous Comtac headset. Designed to fit MICH, PASGT, ACH helmet. Features: Capable for continuous communication of 2-way radios, cup microphones provide talk-thru listening capability, instantaneously suppress harmful impact noises while amplifying ambient noises/ voices, excellent helmet clearance at ear areas, noise canceling flexible gooseneck microphone, various types of chest PTT and finger PTT, waterproof touch pad volume control. NRR 21 dB.