Thank you for viewing. The right earphone's microphone for picking up external sounds is not working well, and noise is present in noise-canceling and external sound input modes. The left earphone also shows signs of malfunction, although the noise is not as significant as the right one. Both earphones play sound normally when noise canceling, etc., are turned off. The charging case shows no particular problems. The product itself has no major chips or cracks, but there are overall minor scratches from use. It has been cleaned with alcohol. If you don't need noise canceling, or if you are just looking for a charging case, I would like to sell it as a junk item, with no claims and no returns. Everything shown in the photos will be sent.