Additional Bluetooth car receiver, integrated microphone, hands-free function, noise cancellation, 3.5 mm AUX input for car, home stereo system, wired headphones, Bluetooth adapter with LCD display

Step 1: Turn on the receiver using the power button on the side. The display will light up, indicating that the receiver is ready to pair. Step 2: (1) Plug the included 3.5 mm AUX plug or cable into the receiver and connect it to the AUX input of your desired source, such as your car stereo or home speakers. (2) Alternatively, you can connect your wired 3.5 mm headphones or earbuds directly to the receiver's AUX input. Step 3: Enable Bluetooth on your smartphone or other smart device and select "BR11" to connect. The message "Bluetooth connected" will appear, and your smartphone's name will be displayed on the receiver's screen once the connection is successful. Step 4: Now enjoy wireless music, voice navigation, and hands-free calling.