An MF exclusive! Its 1"-diameter, 6-micron-thick diaphragm delivers high sensitivity and detailed recordings. Phantom power is not required - the V63M-BP includes a 9 volt internal battery that supplies the voltage to the element. Great for a high end sound when using portable recorders like the Fostex MR8, etc. Wired with Mogami wire for added clarity. Balanced, transformerless output for low noise. Encased in a heavy-duty brass enclosure. 30Hz-20kHz frequency response. Cardioid pickup pattern.