SpecificationMaterial Type : ABSItem Type : FM TransmittersVoltage : 12-24VSpecial Features : HandsfreeSupport Car Voltage display : Reminder Voltage lowSupport Handsfree Call : Bluetooth HandsfreeBuild in microphone : Hands free talking Car KitBluetooth FM Transmitter : Transmissor FM BluetoothDescription1. Precise structural design2. USB3.1A charger, Bluetooth version 5.03. Support charge while listening to songs4. Support power and memory function5. The screen can show the frequency6. Support Bluetooth/TF card/U disk player, Bluetooth hands-free calling7. This product adopts FM full-frequency wireless transmission technology and can directly read the audio files in the mobile phone Bluetooth/TF card/U disk.8. Supports Bluetooth audio playback and Bluetooth hands-free calling.9. Support intelligent APP function, lossless high-quality audio decoding; usb car charging function in a multifunctional car MP3.10. Noise cancellation function, built-in noise cancellation circuit, make the call sound clearerHow to use?1. Insert the cigarette lighter socketInsert the car bluetooth MP3 charger into the cigarette lighter and the voltage will be displayed on the screen for 2 seconds, then the bluetooth mode can be entered. At this time, the default frequency is 87.5MHz.2. Connect your phone to BluetoothTurn on the Bluetooth of your mobile phone and search for the car Bluetooth device "Car Bluetooth" to connect.3. Adjust the car FM frequency to be consistent with BluetoothTurn on the car radio, manual or automatic search function, and lock the frequency to the same frequency as the car MP3 "FM87.5MHz"4. Play music on your phoneOpen the music player on the phone and play music.You can use the car stereo to listen to the music playing