Camcorder microphone series hama rmz transducer type electret condenser directivities cardioid supercardioid suitable for video camera frequency response 20 20000 hz switchable directivity mono features shock mount integrated windshield dimensions 150 x 66 x 35 mm impedance 1 500 ohm battery supply functions onoff switch low cut filter direction characteristic switch gains switch level reduction 10 db amplification 10 db plug 3 5mm jack power