Long Battery Life: Powered by CR2 3V lithium battery, this microphone ensures extended working hours, making it ideal for long recording sessions or fieldwork Dual Range Settings: Offers two range modes - Normal and Tele. Allowing you to switch between short and long-distance recording based on your needs, providing versatility in various shooting environments Stereo Sound Input: Features a double back electret-type capacitor microphone for superior stereo sound capture, delivering high-quality audio for professional results Wide Compatibility: Perfect for use with DSLR cameras, camcorders, and DV recording devices, making it a go-to choice for professional news reporters and filmmakers alike Portable and Detachable Design: Comes with a 3.5mm video audio output line and a removable cassette, offering convenience during news interviews or when switching between devices Specifications: Type of Transduction: Capacitive Polar Pattern: Hypercardioid Acoustical Principle: linear Gradient SNR: 70dB (1KHZ At1 Pa) Max SPL: 120dB 1khz,1%THD Into 1K Load Geometric Noise: 20dB SPL Dynamic Range: 135dB_SPL Frequency Response: 30-15000HZ Sensitivity: -40dB+/-20dB=1V/Palkhz Power Supply: 3V Impedance: 200ohm Effective distance of pickup: 4m Validity of battery: 600 hours Size of microphone tube: 22*180mm Cord length: 0.5m Microphone weight: 120g Output: Unbalance Switch: Slide