Used approximately 10 times. Alcohol-sterilized. The open-ear design doesn't block your ears, allowing you to enjoy a sense of freedom. The design is comfortable even for long periods of use, without causing discomfort to the ears. *Although it's a beautiful item, please understand that it is a used product before purchasing. Please refrain from purchasing if you are concerned about minor details. *Also listed on other apps, so it may be removed. *Please note that returns and refunds are not accepted.