Kingdom KX12 Series Dual Ear Headworn Microphone - KX12SE Compatible with Sennheiser

Specifications:
• Omni-directional
• Frequency response: 50Hz-20KHz
• Sensitivity: -42dB +/- 3dB
• Impedance: 750 Ohm
• S/N 58dB
• Working voltage: DC 1-5V

Connector Style:
3.5mm, 1/8” Stereo Plug / SE
3-Pin / Kingdom / AVT
4-Pin / AT
4-Pin / SH