Thank you for viewing. This is Shokz Aeropex. Operation has been confirmed, and the battery is in good condition. Even after listening for 2-3 hours, the battery still has plenty of life, so it can be used normally. Thank you. ★ Everything in the photos is included. ★ Please read the product description and be sure to check the photos carefully before purchasing. Returns due to oversight are not accepted, so please be aware of this. ★ If you have any questions, please contact us via the comment section. ★ Used items may have minor scratches or scuffs that are not visible in the photos. Please refrain from purchasing if you are looking for a perfect item. ★ Everything in the photos is included. ★ Please read the product description and be sure to check the photos carefully before purchasing. Returns due to oversight are not accepted, so please be aware of this. ★ If you have any questions, please contact us via the comment section. ★ Used items may have minor scratches or scuffs that are not visible in the photos. Please refrain from purchasing if you are looking for a perfect item.