It completely seals the ear canal cutting out background noise very well. I do sit at a desk but didnt really want a desktop usb mic because I lean back in my chair a lot and also didnt want a mic that would pick up a lot of background noise. Ive already fallen asleep with them on. You will feel this. The device was perfect, really, what I was hoping for, but it was too small. I did buy an amplifier (FiiO A5), even though a phone drives these reasonably well. I understand that the PS5 currently does not have chatmix available to 3rd party headphones at the moment (or ever! My students say that my voice quality with the Panasonic earbuds is great. My partners size 8 was chosen after careful measuring of her feet based on the chart. I followed the instructions on the booklet and the buds paired fine, but when I play music they only play a low electrical rattling sound.