F4 Car Bluetooth MP3 Player QC 3.1 Fast Charging, PD Dual Port Charger, U-Disk Music Player, Hands-Free Calling, Rainbow Breathing Light

1. Bluetooth hands-free calling with USB / PD charging port 3.1A output
2. Echo cancellation and noise reduction during calls
3. Stereo Bluetooth + FM transmitter technology
4. Supports USB / TF card / Bluetooth playback
5. Supports MP3 / WMA audio formats
6. Auto power-off memory function
7. Powered via cigarette lighter DC 12V 24V input
8. Bluetooth version 5.0 FM transmission frequency: 87.5 ~ 108 MHz
9. Car battery voltage detection
10. 7-color ambient lighting on the front panel

Car MP3 Player User Guide:

1. Turn on your car radio and tune it to an empty frequency (i.e., no local broadcast station).
2. Plug the device into your car's cigarette lighter socket and set the device's FM frequency to match the frequency you just selected on the radio.
3. Insert a memory card (TF card) or USB flash drive with downloaded music, or connect your phone via Bluetooth.
4. The device will automatically play music from the memory card, USB flash drive, or your phone.