Features1. 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.2. Supports Bluetooth audio playback and Bluetooth hands-free calling. lossless high-quality audio decoding; usb car charging function in a multifunctional car MP3.3. USB2.1A charger, Bluetooth version 4.04. Support Bluetooth/TF card/U disk player, Bluetooth hands-free calling5. The screen can show the frequency6. Support charge while listening to songs7. Noise cancellation function, built-in noise cancellation circuit, make the call sound clearerSpecification1. Interface: High Speed USB2.02. Screen: LED screen3. Bluetooth Version: 4.0+EDR4. Bluetooth sound processing: A2DP5. Power Source: Cigarette Lighter Power6. USB output: 5V/2.1A7. Memory Card Type: TF Card8. Support TF card / U disk capacity: less than or equal to 16GB9. Power supply: DC12-24V10. Support file type: MP311. FM frequency range: 87.5-108MHz12. Signal to noise ratio: 85db (FM: 68db)13. Working temperature: 10-70 degree Celsius14. Bluetooth transmission distance :10~15m15. Material:ABS