QCC Dongle Pro with aptX Adaptive support, featuring a game mode for high-quality sound. This is a standalone product of the Questyle QCC Dongle Pro, which is currently being sold as a full set with px8 s2. Purchased at Yodobashi immediately after the beginning of October. Receipt is included. I do not hold items, and the first person to purchase will be given priority, even during negotiations. Please refer to the official website for the specifications and functions of the model. [Please only purchase if you can promptly provide feedback upon receiving the product, as I am having trouble with people not providing feedback even after several days of receiving the product.] *Notes* This is a used item, so there may be scratches. Please refrain from purchasing if you are sensitive to this. As this is a used item, I cannot accept claims or returns even if there are issues with the product. Thank you for viewing.