Super Uni-directional Electret Condenser Microphone

1) Energy exchange: condenser 2) Directional: uni-ultra-directional 3) Frequency response: 100-1600Hz 4) Output impedance: 1K ? for distance, 2.3K ? or long distance 5) Power supply: DC 1.5V 6) Sensibility: -45dB for short distance, -38dB for long distance 7) Load batteries properly accoring to the +, - marks on the microphone battery shell, fix the audio frequency output cable, and then cap the anti-wind foam 8) Switch on, and push the siwtch to the fist archive for short distance application, or to the second archive for long distance application 8) Size: 36.2x2x2cm 9) Weight: 128g 10) Line length: 9m