Features: Cardioid pickup microphone, using dual head complementary noise interference pickup technology, effective pickup range reach 20m. External +10dB sensitivity enhancement switch and 200Hz low frequency attenuation to meet different occasions. The NCR denoise pickup technology feature super power noise reduction; Shockproof design, effectively reduce mechanical noise of the camera and other vibration noise. Aluminum alloy constructed tone tube can offer effective shielding of electromagnetic interference; All metal mic shell, surface anodic oxidation processed, it is solid and delicate. 1pcs CR2032 button battery can last for around 60h; With low power indicator. 3.5mm standard audio input suitable for most DSLR cameras, camcorders, digital video camcorder etc. Standard cold shoe mount, can be mounted on camera easily.