IntroductionThis Professional DV stereo microphone fits for home-used DV. It is delicate and light， 2 built in cartridges which are vertical to each other. The MS stereo system enables a natural sound pick up. And it is with low voltage alarm indication， wide frequency， high sensitivity， and strong direction， long distance sound pick up natural， clear and sweet.Features:New and high qualityThe microphone can be fixed on the DV with microphone hole and path. The MS stereo system enables a natural sound pick-up. Delivering a stereo sound image with superb clarityThe pickup pattern (affecting the soundstage width) can be set to 90 or 120 according to the sound source4. The microphone can work for more than 800 hours when you install the CR2 3V Li battery in the package. (The actual hour depends on the varied case)Compatible:Nikon DSLR Camera D5100， D7000， D300s， D3sCanon DSLR Camera EOS 1D Mark IV， 5D Mark II， 7D， 60D， 600D/Rebel T3i/Kiss X5， 550D/Rebel T2i/Kiss X4Canon Camcorder LEGRIA HF G10， HF M41， HF S21Pentax K7 K-5Any other D-SLR cameras which have 3.5mm MIC socket and hot shoePerformance parameters:Frequency response: 30-15000 HzSensitivity: -40 dB (0dB = 1 V/Pa at 1 KHZ)Pointing to the features: single directional x 2Output impedance: 200�� (Ohm)Signal-to-noise radio: 76 dB (1 KHZ at 1 PA)The loudest level: 120 dB at 1 KHZ harmonic distortion in 1% or less)Power supply: 3V DCSpecifications:Type: MS (Mid �C Side) stereo wireLength of cable: About 11.02 inch / 28cmPower requirements: 3V CR2 batteryBattery life: About 800 hours (at room temperature)Size: 5.12 x 2.36 x 1.38 inch / 13 x 6 x 3.5cm (L x W x H) (not including conductor)Package size: 8.07 x 4.92 x 1.57 inch / 20.5 x 12.5 x 4cm (L x W x H)Color: BlackNet Weight: About 45g (not including battery)Gross Weight: 4.2 oz / 119 gSize: 30.5 * 61 * 132.5mmPackage included:1 x Microphone (The camera isn't included， it's for show purpose only.)1 x Wind screen1 x Manual(Note: The final package may vary a bit; we��ll always ship the latest version one to you. If you find out that there is some mistake on the description， please kindly help us point it out， we��ll modify it immediately.)Pay attention:If this microphone is not connected with your D-SLR camera， after you put the battery inside and push the button， the indicator LED will flash for a second only.If this microphone is connected with your D-SLR camera， the indicator LED will keep dark during recording. And if the indicator LED keeps flash， it means the battery is too weak and you need to change a new battery.