Feature:

1. bluetooth handsfree call
2. Call when the echo and noise handling (car driving speed of 100 yards, the use of bluetooth calls without any echo)
3. Stereo bluetooth and FM launch technology
4. Support TF card
5. Support MP3 format music
6. Automatic power off memory function
7. Direct car cigarette lighter power supply

Specification: 
Model: X1
Material: ABS
Voltage: 12 - 24V
Music Source: bluetooth devices,Cellphone,Flash drive,TF/Micro SD Card 
bluetooth protocol: A2DP
Function: handsfree, MP3 player, FM transmitter, power-off memory function, A2DP 
Voice prompt language: other
bluetooth version: bluetooth V4.1
Transmission frequency: 2.4GHz
Transmission distance: 10m
MIC effective distance: 3 - 5m
FM frequency range: 87.5 - 108.0MHz
FM transmission distance: 3 - 5m 
Frequency response: 20Hz - 15KHz
SNR: more than 60dB
THD: less than 0.1 percent
Battery charging voltage: 12 - 24V
Interface / port: USB 2.0, TF card slot