Bluetooth 5.0 Transmitter and Receiver Bluetooth Transmitter: The Bluetooth transmitter function transmits audio wirelessly to Bluetooth headphones/speakers. Bluetooth Receiver: Turn the traditional car speaker or stereo into Bluetooth-enabled speakers. Works with device with 3.5 mm interface. (When used on PC, use USB charging data.) Latest Bluetooth Transmitter for PC When the USB charging data cable is plugged into the computer, it can be used as a transmitter to transmit audio, enabling the computer to have Bluetooth function. If the computer's USB interface is USB 3.0, after the computer is turned off, the computer's USB interface can still supply power to the transceiver and maintain the paired connection state.