Stereo Microphone (Shotgun) With Windscreen & Dead Cat Wind Muff For Panasonic Lumix & Video (Alternative To Panasonic DMW-MS2) Transducer: Condenser, Polar Pattern: Super-cardioid, Frequency Response: 50Hz - 60kHz Selectable HPF @ 80Hz / 12dB /octave, Shock-resistant structural design, to reduce the mechanical noise of the camera and other vibration noise. Sensitivity:-32dB  3dB (0dB = 1V/Pa at 1kHz). enhanced sensitivity: +10 dB., The low-frequency attenuation: 60Hz 10dB / octave. output impedance: 2000  30%., Power Supply: AA Battery (Included), Battery Life: 80 hours approximately. Low power indicator , PAD Switch: 0dB, 10dB - 10dB sensitivity enhancement and 200Hz low-frequency attenuation; to meet the different field Co-use Dimensions (LxHxD): 8 x 4 x 2.5" (203 x 101 x 63mm), Weight: 7.23 oz (205g) What's in the box: Shotgun Microphone, Foam windscreen, Dead Cat Wind Muff, Warranty & Instructions.