Features: Bluetooth Version 4.0, support Bluetooth Handsfree call, Bluetooth music transmission, caller number; Support TF Card(Micro SD Card)/USB Flash player(card reader function), support MP3/WMA format music; Double USB Charging port DC5V/2.1A can expand the portable device function, suitable for all mobile phone, tablet and other electronic products charge; 1.3 inch dot matrix LED screen, display frequency point, file name, and working state information; Support ONE key menu setting language, playback mode, and sound mode; Support Power Failure memory and folder playback; AUX Input function; Car Battery Voltage display; FM Frequency range: 87.5MHz to 108MHz Specification: *Rated operating voltage: 12V-24V *USB Output: 5V/2.1A + 5V/1.0A *Working Temp: 0-40 Celsius *Support Play format: MP3 / WMA *TF/USB Flash Storage memory: <128GB (not included) *SNR: >60db *Distortion: <0.1% *Frequency Response: 20Hz-15Khz *Left and right channel separation: >60db *BT Version: Version 4.0+EDR *Bluetooth transmission distance: 10M *Microphone effective range: 0.5-2M *FM transmission frequency: 87.5-108Mhz *Product size:13*10*3.5cm Package Includes: 1 x Bluetooth Car MP3 Player 1 x 3.5mm Audio Cable 1 x User Manual