ITEM NAME:Bluetooth 5.0 Audio Receiver Transmitter 2 in 1 3.5mm AUX USB Wireless Adapter Product Description Description: Feature: 1. Receiving mode: A. insert the USB head of the Bluetooth transmitter receiver into the USB plug of the vehicle or plug in the USB power supply; insert the 3.5mm audio plug into the 3.5mm audio interface of the vehicle or the audio aux in interface of the wired speaker; after the USB Bluetooth adapter is connected to the power supply, it will automatically enter the power on state, and the indicator light will flash in blue with the power on prompt tone. B. After the Bluetooth of the mobile phone is connected with the Bluetooth transmitting receiver successfully, the speaker will play and use normally, and the function will be switched on the mobile phone. C. Call / end the call; the phone is answered manually on the mobile device. After the call is connected, the user's voice can be transmitted through the microphone of the Bluetooth transmitting receiver, and the voice of the other party can be played through the car speakers or other audio speaker devices connected and used by the user. 2. Transmitter mode: Switch the Bluetooth transmitter receiver to the red light flash state, and wirelessly transmit audio from non Bluetooth TV, home stereo system or CD player to Bluetooth headset, Bluetooth speaker and Bluetooth receiver. 3. Matching mode: A. receiving mode: when Bluetooth is paired for the first time, please control the distance between Bluetooth adapter and mobile phone within 1m. Turn on Bluetooth function of mobile phone, search Bluetooth device, select device model: car music, click Connect. Enter the pairing password "0000" (some mobile phones need a password, some mobile phones don't need a password pairing). B. transmission mode: use 3.5 audio line or RCA Audio line to connect the product to TV and other broadcast devices, and the transmission mode will automatically search other Bluetooth receiving devices (such as Blueto.Transmitter mode Transmitter mode: Red LED on. After the call is connected, the user's voice can be transmitted through the microphone of the Bluetooth transmitting receiver, and the voice of the other party can be played through the car speakers or other audio speaker devices connected and used by the user.