Operating Guide
1) The 3.5MM port is connected to the vehicle's AUX hole, and the USB port is connected to the vehicle's USB port for power supply.
2) The green light flashes rapidly upon receiving power from the USB port and slowly upon establishing a successful Bluetooth (YP04) connection.
3) Successful connection, now you may use

Product Function
1) 3.5mm male audio output—fits well with Aux interface audio equipment, regular audio equipment, and automobile audio systems.
2) Bluetooth 5.3 master control, consistent transmission of signals, no lag or delay. Music listening gets more seamless.
3) Features built-in echo cancellation and support for music and call features on mobile phones.
4) Allow for Bluetooth connections between two mobile phones, audio transmission, and call functionality.
5) Automatic reconnecting without a power loss (connecting automatically when a person gets out of the automobile and back in).
6) Transmission over 0–10 large distances is possible with the built-in antenna design.

Material Advantage
1) High-fidelity transmission, enameled copper wire core, noiseless operation, no current sound. 2) TPU material and nylon braided wire make up the exterior cover, while 6331 PP material makes up the core wire. High elasticity and anti-winding properties ensure that the transmission line stays neat.
3) Zinc alloy shell: long service life, excellent heat dissipation, and not too hot.