Features :

Bluetooth hands-free function

1.8 inch TFT(Color)Display the FM frequency/track
Bluetooth hands-free kit, with built-in microphone
Support USB disk and support TF card
Excellent voice quality, use the DSP technology to echo cancellation
Double USB charging ports

Specifications :

Bluetooth specification 
Frequency range: 87.5-108MHz
Output Frequency: 20Hz-20 KHz
Supply voltage: 12-24V
PD Charge output: 5V/2.4A 9V/3A 12V/1.2A

USB  Charge output: 5V/2.4A 
Support file format: MP3/WMA/FLAC/WAV
USB Maximum support: 32G
Micro TF Maximum support: 32G