1. The microphone can be fixed on the DV with microphone hole and path. The MS stereo system enables a natural sound pick-up. Delivering a stereo sound image with superb clarity. 2. The pickup pattern (affecting the soundstage width) can be set to 90 or 120 according to the sound. 3. Fit any device that have 3.5mm MIC socket and hot shoe. 4. Frequency response: 30-15000Hz. 5. Sensitivity: -40dB+/-2dB (0dB = 1V/Pa at 1KHZ).