Ideally suitable for video camera recorders. Powered by a button cell it can be switched to super cardioid tele or cardioid normal response. In super mode it will zoom in on the sounds of interest cutting out background noise. Two connecting cables are supplied 30cm and 5m along with a windshield an adaptor and a microphone holder. Replacement batteries are available Maplin Order Code FM28F. SpecificationsFrequency response80Hz - 12kHzImpedance normal1kOmegaImpedance tele2.3kOmegaSensitivity normal-66dBSensitivity tele-50dBPower source1.5V Silver oxide battery