The Bluetooth music receiver (hands-free) is a high-tech wireless product that can receive music from a mobile phone or a Bluetooth-enabled transmitter. This music receiver can be used with almost all audio receivers with an input plug, including car units. You can listen to music received from your smartphone and MP3 on your home speakers or your car's audio system. Enjoy in-car music, call solutions, make calls and listen to music from your smartphone through your car stereo. Talk hands-free, listen to music stored on the phone, and even stream Internet radio with a single touch. The product features an embedded echo-cancelling microphone, making it easy to switch between music and phone calls with just one button. technical parameter: 1. Bluetooth V3.0+EDR, the longest transmission distance is 10m 2. Support Bluetooth hands-free calling function 3. Support Bluetooth A2DP stereo 4. Frequency: 2.4GHz 5. Passed CE, FCC, BQB certification 6. 3.5mm stereo input jack 7. Sleep mode, energy saving 8. Power: Charge with mini USB cable 9. Working hours: up to 5 hours Packaging accessories: 1. Bluetooth music receiver 2. USB cable 3. Instructions Charge: 1. Use one end of the provided USB cable to connect to the mini-USB input port of this Bluetooth music receiver 2. Connect the other end of the USB cable to your computer, notebook or USB power converter, then the LED light of the Bluetooth music receiver turns red, indicating that it is charging. 3. When the charging is over, the red LED light will turn off, and it can provide up to 5 hours of play time when fully charged pair: 1. Enter 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 music receiver on your phone or related transmitter 3. At this time, the device is paired and connected. After the connection is successful, the LED light of the Bluetooth music receiver turns blue and flashes slowly 4. For some devices that require a pairing password, please enter "0000" 5. Once the pairing is successful, the device can be powered off, and the next time you connect without re-pairing If paired: 1. Power on: Press and hold the switch button on the Bluetooth music receiver for 3 seconds until the LED light turns blue and flashes to complete the boot 2. Shutdown: Press and hold the switch button for 5 seconds, at this time the red LED light will be on for a long time, then turn off. Note: Please read the instruction manual of your transmitter or mobile phone carefully to find out how to use its Bluetooth wireless technology; If you want to use this bluetooth music receiver to connect to another phone or transmitter, you have to pair it again. play music: 1. Using the provided audio cable and connector, connect this Bluetooth music receiver to your home stereo or car stereo 2. Please confirm that the transmitter (Bluetooth audio receiver, mobile phone, or other related devices) is turned on and paired with the Bluetooth music receiver, and the device is within 10m 3. Play music at this time, the music will be wirelessly transmitted to the Bluetooth music receiver via Bluetooth NOTE: If you cannot listen to music: a) Please make sure your stereo system is connected to the bluetooth music receiver b) Check to make sure your audio volume is not turned down or muted. Handsfree: 1. When your mobile phone uses a Bluetooth microphone by default, you can use the built-in MIC to achieve hands-free calling when a phone is connected. 2. When the phone calls, press the power button once to answer the voice call 3. After the call is completed, it will automatically switch to the previous state of the phone Indicator light shows: 1. Pairing or establishing a connection: the red and blue LED lights flash at the same time 2. Once connected and playing: the blue LED flashes every 3 seconds 3. Sleep mode: blue LED light flashes every 5 seconds 4. Charging: the red LED light is always on 5. Charging and connected: The red LED light flashes slowly