Features 1. 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 4.0 4. Support Bluetooth/TF card/U disk player, Bluetooth hands-free calling 5. The screen can show the frequency 6. Support charge while listening to songs 7. Noise cancellation function, built-in noise cancellation circuit, make the call sound clearer Specification 1. Interface: High Speed USB2.0 2. Screen: LED screen 3. Bluetooth Version: 4.0+EDR 4. Bluetooth sound processing: A2DP 5. Power Source: Cigarette Lighter Power 6. USB output: 5V/2.1A 7. Memory Card Type: TF Card 8. Support TF card / U disk capacity: less than or equal to 16GB 9. Power supply: DC12-24V 10. Support file type: MP3 11. FM frequency range: 87.5-108MHz 12. Signal to noise ratio: 85db (FM: 68db) 13. Working temperature: 10-70 degree Celsius 14. Bluetooth transmission distance :10~15m 15. Material:ABS