Logitech H390 USB Corded PC Headset with Microphone With enhanced digital sound and convenient in-line controls Enjoy clear video calls with an easy USB connection and a noise-canceling microphone. Adjust volume or mute without interrupting the call with the in-line control. Fine-tuned drivers enhance digital audio. (1) Specifications Height: approx. 160 mm Width: 175 mm Depth: approx. 60 mm Weight: 0.1 kg Cable length: 1.8 meters (2) Technical Specifications Microphone type Bi-directional Input impedance: 22 ohms Sensitivity (Headphone) 115 dB +/-3 dB Sensitivity (microphone) -42 dBV/Pa +/- 3 dB Frequency Response (Headset Mic): 20 Hz - 20 kHz 20 Hz - 20 kHz Frequency Response (Microphone): 100 Hz - 16 KHz 100 Hz - 16 KHz (3) Product List USB Computer Headset Microphone User Documentation