Function: music play and hands-free call         
Connect 2 Devices at One Time                                              
Bluetooth Version: 5.0                                                       
Connect the USB and AUX together when use                                         
With MIC                                                                                         
Bluetooth Protocol: A2DP/HFP                                                       
Support SBC/AAC
Frequency range:2.402GHz-2.480GHz *Frequency Response: 20Hz-20kHz                                  
Output Power: 33mW,  RL=16Ω                                
SNR(Signal to Noise Ratio):>90dB                               
Sensitivity: -42?3dB                                       
Transmission distance: up to 10m                                   
THD+N ( total harmonic distortion ):<0.05%                                                   
Bluetooth Delay: <200mS                                                    
USB interface working current:130mA/5V                   
Indicator Lights:LED Red and Blue