The BOYA BY-BM2021 Video Shotgun Microphone is a professional microphone that delivers enhanced sound performance than your smartphone, tablet, camera or camcorders built-in microphone. Key features that contributes to high-resolution sound includes a unique super cardioid polar pattern that focuses on sound thats right in front of the mic and reduces sound coming from the sides and rear; a reinforced ABS construction that weighs only 63g making it easy to transport, and perfect for handheld shooting; and without the use of any switches, its mainly powered by smartphones, cameras, and camcorders.