TOP WING OPT AP Client 無線子機の買取情報

It looks like you are referring to a product, specifically the TOP WING OPT AP Client, which appears to be an audio-specific wireless receiver or module (無線子機 in Japanese). The model number is TW-OPT-APC.
If you have any specific questions about the product, such as its specifications, how to use it, or troubleshooting tips, feel free to ask!