This BOYA Directional Video Condenser Microphone BY-VM01 is suitable for reporting, film and broadcast location applications and for picking up quiet signals in noisy or acoustically live environments as it discriminates against sound not emanating from the main pick-up direction. Features: Broadcast-quality Microphone Unidirectional condenser microphone Integrated shock mount and windshield Reinforced PC+ ABS construction Integrated cold-shoe mount Specification: Brand: BOYA Model No. BY-VM01 Transducer: Condenser Directional Pattern: Unidirectional Frequency Response: 38Hz-20,000Hz Sensitivity -40dB 2dB re 1V/Pa @ 1kHz Output impedance: 1K Ohm or less S/N Ratio: 75dB or More Power Source 1.5V AAA battery Output connection: 3-pin mini-jack Size: 109mm x 75mm x 18mm Net weight: 62g Contains: 1x BOYA Microphone BY-VM01 1x Sponge Cover