A unique gaming experience: these game & chat gaming headphones offer you a clear and powerful stereo sound thanks to their 50 mm speakers with an impedance of 32 +/- 10% at 1KHZ, a sensitivity of 108 +/- 3Db at 1KHZ and a frequency range of 20HZ to 20KHZ that will give you a total immersion feeling. (Microphone sensitivity: -40 +/- 3 dB/ 2.2?). Maximum playing comfort: very light (210G), fully adjustable (adjustable headband, retractable microphone), and with its meticulous finish (50 mms pads