TAKSTAR SGC-598 Photography Interview Shotgun MIC Microphone for Nikon Canon DSLR Camera (Need 3.5mm Interface)Auxiliary Description Features: Low power indicator Transducer Principle: Back Electret Condenser Directivity Characteristic: Cardioid Powered by 1.5V AA alkaline battery Sensitivity: -32dB+/-3dB(0dB=1V/Pa at 1kHz) Product Details: Recommended Uses For Product: Video Conference, Singing Brand: TAKSTAR Connectivity Technology: Auxiliary Connector Type: 3.5 mm Jack Special Feature: 3.5mm jack Compatible Devices: Camera Color: Black Included Components: battery Polar Pattern: Unidirectional Audio Sensitivity: 32 dB Product Dimensions: 8.66 x 3.35 x 1.57 inches Item Weight: 5.4 ounces Item model number: CMR-HT2855 Batteries: 1 AA batteries required. Is Discontinued By Manufacturer: No Date First Available: December 18, 2013 Manufacturer: TAKSTAR