Features: New and high quality The 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 clarity The 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. (The actual hour depends on the varied case) Performance parameters: Frequency response: 30-15000 Hz Sensitivity: -40 dB (0dB = 1 V/Pa at 1 KHZ) Pointing to the features: single directional x 2 Output impedance: 200ω (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 DC Specifications: Type: MS (Mid – Side) stereo wire Length of cable: About 11.02 inch / 28cm Power requirements: 3V CR2 lithium battery (not included) Battery life: About 800 hours Size: 5.12 x 2.36 x 1.38 inch / 13 x 6 x 3.5cm (L x W x H) Color: Black Package included: 1 x Microphone 1 x Wind screen