Description:1. bluetooth answer, hang up, reject, redial phone & other functions.2. Support bluetooth stereo music playback.3. Digital tube display.4. Support car battery voltage detection.5. Support U disk playback (1G-32G).6. Support MP3/WMA/WAV format music 7. Support FM full frequency point transmission function 87.5-108.0MHZ.8. Automatic power off memory function.9. U disk interface supports 5V/3.4A mobile phone charging.10. Support mobile phone navigation voice prompts.11. Support charging recognition. Technical Parameters:1. bluetooth version: Version 4.22. bluetooth sound processing: with A2DP (Advance Audio Distribution Profile) function 3. Rated working voltage: 12V~24V4. Extreme working voltage: 8-32V5. USB1 output: 5V/1A6. USB2 output: 5V/2.4A7. Support music format: MP3/WMA/WAV8. Support U disk capacity: 1G-32G9. Working temperature: 70 degrees 10. Battery voltage accuracy: error 1V11. Signal to noise ratio: 60d B12. Distortion: 0.1%13. Frequency response: 20 Hz-20 Khz 14. Left & right channel separation: 60d B15. bluetooth transmission distance: less than 10M16. bluetooth microphone effective distance: 0.5-2M17. FM transmission frequency: 87.5 M Hz-108.0 M Hz 18. Effective range of launch: 2 M Package Included:1 XY10 Car MP3 bluetooth Hands Free Charger