BOYA BY-VM190P Stereo Video DSLR Camera DV Audio Recorder Shotgun Microphone  Descripton:   The BOYA BY-VM190P has a super-cardioid pickup pattern to capture audio from the front、 while minimizing pickup from the sides and rear. It's compact and lightweight design with a rugged construction that's ideal for use with HDSLR cameras、 camcorders、 and audio recorders. The integrated shockmount conveniently mounts the microphone onto any camera accessory shoe while effectively suppressing handling and vibration noise. Three gain settings(-10dB、 0dB、 +10dB) help adjust the level of sound capture whether from a close-up or long shot、 while a bass roll-off switch cuts low-frequency noise. One 9 Volt battery can be used for approximately 100 hours.   Features:   • Studio recording quality • Super-cardioid Polar Pattern • Integrated Shock Mount • Foam Windshield included • Two step High Pass Filter(Flat\/80HZ) • 3-Position Level Control(-10bB、 0dB、 +10dB) • 1\/4 inch Threaded Mount • 3.5 Output Plug • Durable ABS Construction  Specifications:                Type         Condenser Microphone(Unidirectional)               Polar Pattern         Super-Cardioid               Frequency Response         35-20、000HZ               Sensitivity         -40dB +\/- 1dB \/ 0dB=1V\/Pa、 1kHz               Signal to Noise Ratio         75dB or more               Output Impedance         200Ohm or less               Power         9V alkaline or Lithium battery(not included)               Plug         Mini-pin plug (3.5mm)               Filter          Controlled by low-cut filter switch               Dimensions(L*H*D)         220mmL × 102mmH × 58mmD               Net Weight         121g          Frequency Response:           Polar Pattern:                     Package included:               1 x BOYA BY-VM190P Microphone       1 x Windshield       1 x Rubber Band       1 x Carrying bag       1 x User Manual      Detail Pictures: