Microphone: 6.0mm uni-directional microphone Ear Coupling: Over-Ear Connection: 3.5mm 5Pole Jack Drivers: 40mm Neodymium Magnet PHYSICAL SPECIFICATIONS Headband Pressure: 4.5N Weight w/o Cable: 346 grams TECHNICAL SPECIFICATIONS Frequency Response: 20 – 20,000 Hz Distortion: < 3% at 1 kHz 104dB +/- 3dDB AT 1 kHz DC impedance 32 ohmsA10 Headset