・ Purchased on Amazon about 4 years ago. ・ I have been using it continuously for meetings until recently. ・ It works normally (confirmed with a Zoom microphone test). ・ However, as pointed out in the reviews for this product, the sound is quiet, so I think it's a product that requires some adjustments, such as increasing the volume on the PC side, to use it comfortably. ・ The contents are all shown in the first photo.