3.5mm External Stereo Microphone For Canon Nikon DSLR Camera DV Camcorder Phone Product Features： -Strong Compatibility: It is specially designed for photography, interview and other professional fields. Designed to fit common mid-range to high-end cameras and DSLR cameras, DV camcorders, such as Canon, Nikon, Sony, Panasonic, etc. -Easy to Install: It uses a standard 3.5mm audio cable, a standard hot shoe port at the bottom, and a screw hole for effective support equipment installation. -Long Standby Time: It uses energy-saving and environmentally friendly lithium 280mAh 3V CR2 battery, and the continuous working time is more than 70 hours. -Ultra-high Sensitivity: Large pickup range, built-in professional high-performance super-cardioid pickup microphone with dual-head mutual complementary sound pickup technology, with long pickup distance, wide frequency response, and high-definition sound resolution, effective pickup distance of 20 meters. -Materials: long service life, easy to use, does not affect the work. Product Specification： Type：Microphone Frequency Response：30-15000 HZ Sensitivity：-40dB±2dB(0dB=1V/Pa 1K HZ) Pointing to the Features：Single Directional × 1 Output Impedance：<200 Ω Signal-to-Noise Ratio：76dB(1 KNZ at 1 PA) Loudest Level：120dB(at 1K HZ harmonic distortion≦1%) Power Requirements：3V CR2 battery Package Included： 1 x Microphone 1 x 3V CR2 Battery 1 x Instruction Manual