Very high quality microphone, no noise. When the laptop is powered on, the noise is there, as soon as you turn it off, it disappears

Has pros: Good sound, good quality microphone. Ideal for skype, zoom, etc. When connected to a laptop, Windows switches to them instantly. Got cons: Not very comfortable sitting on the head, a little pressure.

Got pros: very comfortable fit well, do not press and does not start to hurt the ear Has some cons: They took 15 pieces for the office, of which 3 microphones died after a year, though . but it infuriates

The head does not get tired for a long time. Bought for online learning. The sound is great. They work via usb, the computer detects them instantly.