They also have a built in microphone that the student uses to Zoom with a math tutor. I felt like it should?ve been a little cheaper no more than 18 bucks. So I appreciate the fact that this headset eschewed such nonsense, focusing instead on audio quality and the comfortableness of the headset. ?? Esperienza d?utilizzo: dal lato esterno hanno un bel design elegante ed un bel colore bianco candido. I love the fact that something that tastes like a delicious carnival treat could be zero calories. One of the best Lits out there. Its what I was looking for in a multifunctional laundry/ mudroom Ive tested it while outdoors in the wind, tv background noise, a toddler yelling in the other room and while driving with windows down and it hits every mark. I?m very happy with them. Size 280 seems to be a Japanese or Korean size.