TX3 Bluetooth USB5.0 Bluetooth Audio Transfer Transmitter USB bluetooth transmission mode: 1: USB is directly plugged into the computer's USB interface when the sound card is used, and the blue light flashes. Turn on the bluetooth headset or bluetooth speaker and enter the matching state, and the bluetooth transmitter will automatically search for connection. 2: use it on TV, plug USB into a 5V power supply UDB or charger, connect the audio cable to the TV audio port, set the TV as the headset output, red light flashing, turn on the bluetooth headset or bluetooth speaker, enter the matching state, bluetooth transmitter will automatically search for connection, after the connection is successful, the blue light will be long on. 3.AUX wired connection interface shall be connected to the charger for power supply 4. Support bluetooth speaker for TV, laptop, bluetooth headset 5. Product size: 47*23*11MM 6. Launcher *1 blister package *1