[Scope of application] This converter is used for hosts without low frequency (RCA) output, such as cassette players/card players/CD/VCD/DVD, etc. Convert the loudspeaker's high-frequency output to low-frequency (RCA) output, and connect the signal output of a car amplifier or subwoofer. | [Scope of application] This converter is used for hosts without low frequency (RCA) output, such as cassette players/card players/CD/VCD/DVD, etc. Convert the loudspeaker's high-frequency output to low-frequency (RCA) output, and connect the signal output of a car amplifier or subwoofer. | [Scope of application] This converter is used for hosts without low frequency (RCA) output, such as cassette players/card players/CD/VCD/DVD, etc. Convert the loudspeaker's high-frequency output to low-frequency (RCA) output, and connect the signal output of a car amplifier or subwoofer. | [Bluetooth support] Only devices with a volume control knob in the center of the device and an AUX button in the upper left corner of the device can work. The car radio has no functional limitations and can be connected to an external audio source. Run through Bluetooth-enabled devices. You can control it on your phone. | [Standard connector] Most cars have this type of radio, but for some hosts with a "tuner list" type, the cable will not be usable. It can be placed directly on the center console without wiring everywhere, avoiding messy wiring that may cause current and sound interference. | Switch between transmitter and receiver modes with the simple flick of a switch. Effortlessly connect using advanced Bluetooth technology and 3.5mm audio cable (included). | [After-sales service] We provide product guarantees for all these products and promise to provide you with the best customer service! If you encounter any problems during use, please contact our customer service in time, we will promptly solve difficult problems for you.