Camcorder microphone series rode vm transducer type condenser directivity supercardioid suitable for video camera public speaking podcast interview sensitivity 1khz 20 mvpa frequency response 40 20000 hz operating time 70 h features internal shock absorber integrated windshield shock mount capsule diameter 127 mm noise level 134 db transmission mode cable impedance 200 ohm battery supply functions low cut filter onoff switch level lowering