Feature: Broadcast-Quality microphone Unidirectional Condenser microphone Integrated Shock Mount and Windshield Reinforced ABS construction Integrated hot-shoe mount 1.5V AAA battery Specification: Type：condenser microphone (unidirectional) Frequency Response：38-20,000Hz Sensitivity：-40dB +/- 3dB / 0dB=1V/Pa, 1kHz Signal to Noise Ratio：75dB or more Output Impedance：1.0k Ohm or less Power：1.5V battery Plug: mini-pin plug (3.5mm) Built-in standard shoe-mount. May require mounting bracket if the shoe mount is not compatible with your device. Dimensions(L*H*D)：109*75*18mm Net Weight：62g