Speaker:
Horn diameter: 40mm
Impedance: 22Ω±10%
Horn sensitivity: 110±3dB
Frequency response: 20Hz-20kHz
Microphone:
Mic Diameter: 4.0mm*1.5mm
Sensitivity: -42±3dB
Impedance: 2.2KΩ
Cable Length: 2.1M±0.15M
Plug Type: 3.5mm Jack+ USB
Working voltage: DC5V±5%