H151 Stereo Headset Microphone Multi-device headset microphone with in-line control Simply plug the H151 stereo headset microphone into the 3.5mm socket of your computer, tablet or smartphone. Adjust volume or mute calls with the in-line control without interrupting. Specifications and details Specification Height: 200 mm Width: 245 mm Depth: 65 mm Weight: 0.08 kg Cable length: 1.8 meters Technical specifications Microphone type: Bi-directional Input impedance: 22 ohms Sensitivity (Headphone): 122 dB +/-3 dB Sensitivity (microphone): -44 dBV/Pa +/- 2.5 dB Frequency Response (Headphone Mic): 20 Hz - 20 kHz Frequency Response (Mic): 100 Hz - 6.5 KHz Product List Headset Microphone User documentation