I urgently needed to hold a meeting at home using Zoom, so these are the items I quickly prepared. I've used them two or three times, but there are no noticeable scratches or stains. Operation has been confirmed. The product description is as follows: "USB connection model with clear audio and strong noise resistance Wind filter on the microphone to reduce noise Weight: 200g Model number: BSHSUH12BK A standard, dual-ear headband headset that provides a stable fit and is comfortable for long periods of use. Color: Black Compatible with both Windows & Mac" I have discarded the original packaging, so I will wrap it in cushioning material and send it via Yu-Packet Plus.