Loudhailer diameter:40mm(NdFeB)

Frequency range: :20-20.000Hz 

Sound effect: 7.1 simulated sound channels 

Sensitivity:112dB /- 3 dB at 1 khz 

Impedance:32 Ohm /- 15% 

Max Input power:30mW 

Mic Dimension:6.0*5.0mm 

Mic Frequency Range:50-10KHz 

Mic Sensitivity:-38dB /- 3 dB 

Mic Impedance:smaller than

Loudhailer diameter:40mm(NdFeB)

Frequency range: :20-20.000Hz 

Sound effect: 7.1 simulated sound channels 

Sensitivity:112dB /- 3 dB at 1 khz 

Impedance:32 Ohm /- 15% 

Max Input power:30mW 

Mic Dimension:6.0*5.0mm 

Mic Frequency Range:50-10KHz 

Mic Sensitivity:-38dB /- 3 dB 

Mic Impedance:smaller than 2.2K ohm at 1khz 

Cable length:2.2m 

Input Plug:USB (USB connection provides power) 

Item with SADES retail gift packing box ,manual