BOYA BY-VM01 Directional Video Condenser Microphone For DSLR Camera Description: Broadcast-quality microphone Unidirectional condenser microphone Integrated shock mount and windshield Reinforced PC + ABS construction Integrated cold-shoe mount 1.5V AAA battery ( package not included) Specification: Transducer: condenser Directional: unidirectional Frequency range: 38-20000Hz Sensitivity: -40dB !#!amp!*!plusmn; 2dB 1V\/Pa @ 1kHz Output impedance: 1K Ohm or less Signal to noise ratio: 75dB or less Output connection: 3.5mm mini-jack Dimensions(L*H*D): 109 x 75 x 18 mm Net weight: 62g Compatible with: Nikon DSLR Camera D800 D800E D3200 D600 D5100， D7000， D300s， D3s D3100 Canon DSLR Camera EOS 6D 650D 1D Mark IV， 5D Mark II， 7D， 60D， 600D\/Rebel T3i\/Kiss X5， 550D\/Rebel T2i\/Kiss X4 Canon Camcorder LEGRIA HF G10， HF M41， HF S21 Pentax K7 K-5 Sony A55 A77 A99 Package included: 1 x Microphone