Speaker size: 50mm
Impedance: 20Ω±15%
Sensitivity: 115±3db
Frequecy range: 20Hz-20KHz
microphone: 6.0x5.0mm
microphone sensitivity: -38±3dB
microphone impedance: 2.2KΩ
Directionality: Omnl-Directional
LED working voltage: DC5V±5%
Working current: ≦500mA
Headset jack: USB+3.5MM