David Clark's top-of-the-line headset is precision engineered to be self-customizing. You can adjust for high, medium or low cup pressure and headband size. Combined flex boom/slider with guide boom lock allows for precise microphone placement. Soft foam air flow pillow headpad. Flo fit gel ear seals. Dual volume control. M-7A Electret mic. Quick disconnect cord allows you to select 3 different cord assemblies (straight std, coiled std, helicopter).