The HBB-EMB professional grade dual-muff headset is perfect for avionics and industrial use. Lightweight, over-the-head band is fully adjustable and very comfortable. Receive audio is heard over loud dual-muff earphones and the flexible boom microphone ensures clear audio on transmit. HBB-EM-OHB microphone elements are easy to change to one of four available versions. The electret mic is most universal version and works with most radios.