Features:
1.FM transmitter 
2.LED display window 
3.LINE audio input 
4.Independent Bluetooth start /shutdown button 
5.Support playing music by USB disk 
6.Support MP3/WMA music format 
7.Answer /hang up/reject/redial via Bluetooth 
8.Bluetooth stereo music play 
9.Call Echo Cancellation and Noise Reduction(CVC) 
10.USB output voltage, provides power to other devices up to 5V/2.5A 
11.Automatic memory function of power failure frequency point 
12.Display of on-board battery voltage 

Parameters:
Material:Engineering plastics 
Rated working voltage:12V-24V 
Limit working voltage:9-262V 
USB output:2.5A 
Working temperature:0-50C 
Play format:Mp3 WPA 
SNR:>60dB 
Degree of distortion: Frequency response:20Hz-15 KHz 
Bluetooth version:2.1+EDR 
Bluetooth sound processing:A2DP (Advance Audio Distribution Profile)function support 
Bluetooth transmission distance:10M 
Effective distance of Bluetooth microphone:0-2M 
FM frequency:87.5-108 MHz 
FM mode:Stereo digital PLL frequency locking 

Packing list:
1 x Car charger 
1 x USB charging cable 
1 x English user manual