BOYA BY-M17R is a super-cardioid shotgun microphone, which is designed for DSLR cameras, camcorders, and recorders With its excellent quality and super-cardioid directivity, it can be widely used for everyday recordings, such as video shooting, video blogging, podcasting, etc.? It has a standard 1/4-inch mounting thread that allows the BY-M17R to be mounted on any standard cold shoe mount. With the integrated shock-absorbing mount, vibration in any shooting environment can be effectively reduced The BY-M17R is made of rugged ABS for clear sound despite its lightweight Specifications: Material: ABS Acoustic principle: Condenser microphone Pointing type: Super-cardioid Frequency Response: 20-20,000Hz Sensitivity: -42±3dB (0dB=1V/Pa @ 1KHz) Output impedance: 50 Ω Signal-to-noise ratio: 78dB or more Output connector: 3.5mm TRS connector Power supply: 1 x AA battery (not included) Endurance: 50 hours Net weight: 116.5g (4.11oz) Dimension: 240 x 106 x 64mm (9.45 x 4.17 x 2.52")