【Reference Price】¥25,736 【Usage Period/Product Condition】 Purchased in September 2022. The charging case shows no particular signs of deterioration, but there are some minor scratches. The left earbud only starts up when paired with the right earbud, and the battery life when starting up is less than 10 minutes. The right earbud has a battery life of approximately 20 minutes. Regarding sound quality, it can be adjusted via the app and is believed to be unaffected. Please be aware of the above product condition before purchasing. The product will be cleaned with a cloth before shipping. 【Reason for Listing】 To declutter 【Items for Sale】 ・SONY Wireless Earbuds WF-1000XM4 BLACK ・Case cover with carabiner Please note that the box and ear tips are not included. Please ask any questions in the comments. Thank you for considering purchasing.