The J22 Bluetooth Car USB Auxiliary Receiver in Rose Gold is an adapter designed to allow music streaming through Bluetooth connectivity. It features a 3.5mm jack port for easy connection to audio receivers and car auxiliary systems. The receiver also supports hands-free calling and operates on Bluetooth v5.0 standard for stable and reliable connections. With a manufacturer warranty of 1 year, the J22 is a reliable option for adapting your car's audio system to accommodate Bluetooth-enabled devices.