Self-adjusting, pivoting ear cup assures a comfortable fit. Headset frame is chrome plated hardened spring steel. Custom flex microphone boom for perfect mic positioning. Microphone boom rotates 180 degrees for use on either side of head. M-81 noise-canceling electret microphone with windscreen. Easy grab volume adjust control. High impact ABS plastic ear cup. Super-tough and lightweight. Plug type: U-174/U, 4 conductor.