Joleritc M31 USB+3.5mm-Mini-Jack Microphone

Specifications: Model: M31 Size of Host Machine: 140x140x42mm Weight of Host Machine: 106g Sampling frequency of speaker: 24Khz Sampling frequency of microphone: 16Khz Speaker: 4Ω 8W Operating voltage: 4.5V ~ 5.5V Microphone Sensitivity: -34 +/- 3 dB Frequency: 100 ~ 10,000 Hz Output impedance: ≤2.2KΩ SNR: ≥58dB Max SPL: 115dB Max Current Consumption: ≤0.5mA Echo cancellation: Max: 256ms Reverberation time: <0.5S Noise: <48dBA o processing: AEC/AGC/NR/NLP/ALC System : Windows8/windows7/vista/xp/2000/Mac10.5/Android Package List: 1 x Microphone 1 x USB Cable