A unique gaming experience: This \"game & chat\" gamer headset offers you a clear and powerful stereo sound thanks to its 40 mm speakers whose impedance of 32 +/- 10% ? at 1KHz, sensitivity of 108 +/- 3db at 1KHz and frequency range of 20Hz to 20KHz will give you a sensation of total immersion. (Microphone sensitivity: -40 +/- 3 db. / 2.2 ?) Very lightweight (210g), fully adjustable (adjustable hoops, retractable microphone), and with its neat finish (50 MMS pads and padded imitation leather hoops