The FHS Over-The-Head Fire Safety Industrial Headset by Rugged Radios is a universal, comfortable, over-the-head design compatible with nearly any brand or type of fire intercom using optional coil-cords. This serviceable, reversible-design headset allows cord connection on either side for convenience. Available in three configurations: no buttons, PTT (Push to Talk), or mic on/off button. Notable features include a DNC microphone for transparent transmissions, Clear Hear speakers for peerless audio performance, waterproof cover on the ear dome, homely head pad for all-day comfort, noise cancelling EM56 microphone, a rugged full flex mic boom, and a large detent volume control. The headset finish is in carbon fiber style. Compatible cables are David Clark, Avcomm, and Sigtronics (using coil cord CC-1/4), and Rugged and Firecom using CC-FIRECOM.