Selling due to the purchase of a new headset. - 3.5mm stereo mini-plug connection - Lightweight - Noise-canceling microphone for clear voice transmission to the other party - 180° rotatable microphone, can be worn on either left or right side - Easy adjustment, retractable flexible microphone - Adjustable headband - Recommended business headset for calls, Skype, Zoom, webinars, etc. - Compatible with most operating systems and platforms Headphone Sensitivity: 32Ω Headphone Sensitivity: 100dB +/-3dB Microphone Sensitivity: -58dBV/µBar, -38dBV/Pa +/- 4dB Headset Frequency Response: 20 Hz - 20 KHz Microphone Frequency Response: 100 Hz - 16 KHz Connection: 3.5mm stereo mini-plug Body Size: 162x144x46mm Weight: 74g Cable Length: 235cm