camera microphone, video microphone with shock mount deadcat windscreen for sony, nikon, canon, fuji, dslrs, camcorders, photography interview shotgun mic with 3.5mm jack ploture dual-head mic: built-in professional high-performance super-cardioid pickup microphone with dual-head mutual complementary interference pickup technology ,specially designed for the camera and high-sensitivity condenser microphone to improve the quality of the recording. powered by 1.5v aaa alkaline battery: the new battery can be used continuously 70-80 hours. the power is green ,the microphone has entered the picked state; when the led shows red bright, the battery is low.