"Top-Of-The-Line" standard headset. No other headset has all these exclusive features: Headset Pressure Adjustment Noise Reduction Rating 23 dB Headband Size Adjustment M-7A Microphone Super-Soft, Foam-Filled Pillow Headpad Dual volume control lets you adjust the level for each ear Boom Guide Lock Flo-Fit Gel Ear Seals Exclusive, patented flex/wire boom for easy, precise microphone placement Dome jack lets you select from three different cord assemblies