Feature:1. Support FM full frequency point launch function 87.5-108.0MHZ2. Support the dot matrix screen to display 1.4 inches 4. Support TF card function 5. bluetooth answer, hang up, reject, redial, etc 6. Support bluetooth stereo music playback 7. Echo & noise suppression (CVC) technology during call 8. Support dual USB (Universal Serial Bus) output voltage, power supply to other devices, maximum output of 5V/3.4A9. Automatic power off memory function 10. Support charging identification 11. Support private answer 12. Support hard switch 13. Power supply of super long power cord 14. The main engine supports multiple choice of air conditioning clamp bracket & sucker bracket 15. Large knob multi-function button 16. Support for display contrast adjustment 17. Support for multiple languages 18. Support MP3/WMA format music playback 19. Support the detection of electric frequency voltage Specification: Rated Working Voltage 12V-24 V Limit Operating Voltage 8-27v USB Output Double USB (Universal Serial Bus) Output Maximum 5V/3.4 A Working Temperature 0-50 Degrees Charging Recognition USB2 Supports 5V/2.4 A Voltage Detection Accuracy+_1VSNR60d B Distortion 0. 1% Frequency Response 20hz-15khz Left & Right Channel Separation 60d Bbluetooth Version Version 4.1+EDRbluetooth Voice Processing A2DP (Advance Audio Distribution Profile)bluetooth Transmission Distance Less Than 10 Mbluetooth Microphone Effective Distance 0.5-2m FM Transmitter Frequency 87.5-108.0mhz Transmit FM Mode Stereo Digital PLL Lock Frequency Package Included:1 X Car MP3 Player