Sony WF-1000XM5 Black Earbud (Left Side Only) * Tested and working * Pairing confirmed Please purchase with confidence as the above has been confirmed. Immediate purchase without comments is also possible. If you've lost one earbud or want to revive your headphones, please consider this. Battery has been confirmed to last for over an hour. Battery life duration is unconfirmed. Please note that the battery is a consumable item and is not covered by warranty. Please be sure to check the product condition in the photos. We will assume that you have agreed to the condition after purchase. Due to being a used item, there may be small scratches or stains that cannot be removed. Please consider this item with the understanding that it is a used product. ◆◆Important Notes◆◆ This earbud is version (4.0.2). Please note that it cannot be paired with versions other than 4.0.2. Please be sure to check the version of your other earbud before purchasing. If you don't know how to check the version, we can tell you how. (Please note that this is different from the app version) ◆◆Pairing◆◆ Although Sony officially states that you cannot pair a separately purchased single earbud, it is possible if the above version conditions are met. Pairing requires a reset + initialization (see the official page for instructions). If you don't understand, please feel free to ask. Pairing is possible even with different colors. Please note that we do not accept returns due to version differences after the product arrives. Search terms #WH-1000XM