? Moving-coil dynamic unidirectional element;? Durable zinc alloy metal construction;? Steel mesh grille;? On/off broadcasting switch;? Freq resp: 50Hz-15kHz;? Imp: 600ohm +/-30%;? Sensitivity: -54dB +/-3dB;? Dim: 6.7H x 1.7W x .3D;? 6.5ft x 1/4 microphone cable;