Bluetooth 5.4 Audio Transmitter Receiver FM USB 3.5MM AUX RCA Stereo HIFI Music
Interface type: input: 3.5mm AUX+RCA+USB output: 3.5mm AUX+RCA. （1）3 in1 FM Bluetooth 5.4 Transmitter Receiver,Built-in battery. Bluetooth version: Bluetooth V5.4. Bluetooth adapter host x1. RCA line x1.