The new ClearCommand HCS Helmet Communications System from MSA simplifies radio communications. The system snaps over the nape strap of any MSA industrial-style helmet with ratchet suspension. Because the system uses a noise-reducing bone-conduction microphone, the wearer's voice is transmitted loudly and clearly, even in noisy environments. A flexible boom ear speaker provides clear audio directly to the wearer's ear, so you can maintain almost hands-free communications. The system is ideal for maintenance work in loud ambient noise areas where communication is essential.