3.5mm car bluetooth receiver, usb bluetooth converter with mic AZ21255 Description£º*****3.5mm car bluetooth receiver, Aux port bluetooth audio music speaker adapter usb, bluetooth converter.*****Charger:*****1. Use the provided USB cable to connect to the mini-usb input interface of this Bluetooth receiver*****2. Link the end of the line to your, laptop or USB device to display the light change of the AC LED computer TV Bluetooth music reception, and it is charging.*****3. When the charging is over, the red LED light is turned on, and it can provide 8 hours of playing time when fully charged.**********1. Enter the pairing mode. Press and hold the switch button for 5 seconds, until the red and blue LED lights flash at the same time*****2. Find this Bluetooth receiver on the transmitter associated with your mobile phone*****3. At this time, the device is paired and connected. After success, the LED light of the Bluetooth receiver turns blue and the connection continues*****4. For some devices that require a pairing password, please enter "0000"*****5. If the pairing is successful, the device can be turned off, and the device will not be paired next time when it is connected ***** If paired:*****1. Start: Long press the switch button on the Bluetooth receiver for 3 seconds, until the LED lights up and flashes to start*****2. Shut down: Long press the switch button 5, the red LED light will be on at this time, and then turn off.