Specifications: Drive unit 40 mm. Impedance 32 ohms. Frequency 20 hz-20 khz. Sensitivity 118 db (+/-2 db). Rated power 20 mw. Cord length 4 ft/1.2 m. 3.5mm console jack. PC/Mac adapter. Headset Features: (1) Deluxe padded headband. (2) Customizable adjustable fit. (3) Soft noise-isolation ear pads. (4) Premium 40 mm drivers. (5) Rotary volume control knob. (6) Microphone mute button. (7) Simulated surround sound. (8) Heavy-duty tangle-free cord. (9) Rotating boom microphone. (10) Comfortable over-the-ear fit.