Carrier frequency:2.4G                                       

Receive distance:15m,360 degree                      

Modulation:GFSK                                               

Transmitting:0dBm                                            

Frequency response:20~20KHz                         

Distortion factor :   <0.1%                                     

SNR:>75dB                                                           

Operation

voltage:3.5V~4.5V 
Speaker impedances:32 ohm                              

Transmitter operation voltage:USB 5V 
Port:Standard USB port