Join colleagues on a Zoom call or listen to music through your PC with this ProSound Stereo USB-A Headset. Built with an overhead headband and boom microphone, this headset is comfortable to wear and perfect for travel. Volume and mute controls ensure you will be able to make calls in comfort with clear and professional sound, even in open office spaces. The boom microphone has a sensitivity of -38+/-4 dB at 1 KHz (0 dB=1V/Pa) Headphone sensitivity is 101+/-3dB and a frequency range of 30~16, 000Hz. Microphone Technical Specifications Sensitivity: -38+/-4 dB at 1 KHz (0 dB=1V/Pa) Impedance: 2.2k Frequency Response: 30~16, 000Hz. Headphone Technical Specifications Impedance: 32 ohms+/-15% Frequency Range: 20Hz-20kHz Sensitivity: 101+/-3dB At 1KHz Maximum Input power: 100 mW. (1.78V.R.M.S) Connector: USB-A plug