〖Brand〗Anker 〖Model〗Soundcore Liberty 4 Pro Left Ear 〖Color〗Black (BLACK) 〖Model Number〗A3954 〖Firmware Version〗03.29 〖Condition and Overview〗 Usage Period: Approximately 6 to 8 months There are some scratches and minor marks, and it shows a moderate amount of use. How about it for someone who has lost one earbud? ‼️【Please Read the Following Carefully!!!】‼️ ▪️Pairing may not be possible if the firmware versions are different. Please check the version. (It seems that pairing may be possible even with different versions, but the compatibility of versions has not been confirmed.) We are sorry, but we cannot be held responsible for any issues caused by different versions between the left and right earbuds. ▪️The items shown in the listing and the product images are the items for sale. ▪️Please understand that this is a used item. Functions such as battery life, sound quality, and noise canceling may have deteriorated. We cannot guarantee the same functionality and performance as new products, so please be aware of this. The following operations have been confirmed. ▪️ Confirmed Operations ▪️ ☑ Charging the earbud ☑ Bluetooth connection with my smartphone (Android) ☑ Music playback ☑ Touch sensor operation ☑ Connection with the Soundcore app