Self-adjusting, pivoting ear cups assure 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. Ear cups are high impact ABS plastic. Super-tough and lightweight. Plug type: 0.25 inch, 3 conductor.