Neewer® SG-108 Camera Shotgun DV Stereo Microphone for Canon EOS 1D Mark IV 5D Mark II III 7D 70D 60D 700D 600D/Rebel T5i,T4i,T3i/Kiss X5 550D/Rebel T2i/Kiss X4  Nikon D800 D800E D600 D7100 D5200 D7000 D300s D3s Pentax K-7 K-5
Specifications:Frequency response:30-18000HzSensitivity:-40dB(0dB=1v/pA AT 1KHz)Direction:Uni-directionOutput Impedance:200ωS/N Ratio:76dB(1 KHz at 1Pa)Max SPL,120dB(at 1 KHz ≤ 1% T.H.D)Power Requirement:DC 3VModel:MS(Mid-Side)Stereo SystemPower requirement:CR2 3V Li battery(please use it in the room temperature),it can last for about 800 hours.(with the CR2 3V Li battery)Mode of sound pick-up:90 or 120,2 kinds for your switchpackage contents1 x Microphone1 x Wind screen1 x CR2 3V Li battery1 x Portable bag