Receive mode: connect the audio playback device of the wired device to receive the Bluetooth signal for wireless playback Launch mode: connect to an audio output device, emit Bluetooth signals, and play them over paired wireless 3.5mm interface, suitable for a variety of equipment on the market. It is convenient and fast, and has Bluetooth function when plugged in Fix the problem of the TV not connecting to the Bluetooth headset. Enjoy immersive movie-watching experience Car speakers instantly upgrade Bluetooth call/listen to music/navigation, sound quality is clear Bluetooth 5.2 chip, stable and fast signal, listen to the song without delay Specifications: Model: M03 Battery capacity: 150mAh Product size: 76*24*12mm Transmission distance: 10m Product function: Bluetooth audio transmitter/receiver two-in-one Indicator light: Charging mode: Red light Receiving mode: When Bluetooth is not connected, the blue light flashes quickly, and the blue light stays on when the connection is successful. In TF card mode, the blue light flashes once for 1 second when reading the card, and the blue light stays on when the pause is on Transmitting mode: When transmitting, the green light flashes quickly, and the green light stays on when the transmission is successful. In TF card mode, the green light flashes once for 1 second when reading the card, and the green light stays on when the pause is on