Camcorder microphone series walimex pro transducer type electret condenser directivity cardioid suitable for video camera interview public speaking sensitivity 1khz 8 mvpa frequency response 35 20000 hz stereo features shock mount transmission mode cable signal noise ratio 75 db impedance 500 ohm battery supply function low cut filter high pass filter 80 hz plug 3 5mm jack power supply aaa battery housing material aluminium weight 70 g