The BOYA BY-MM1 is a cardioid microphone, which specially design to improve the sound quality of videos on the basis of build-in microphones. With both TRS cable and TRRS output cable included, it can be used on Smartphones, cameras, camcorders, audio recorders, PCs, and other audio/video recording devices. BY-MM1 comes out in compact size and light weight aluminium constructure , it will not be a heavy burden while shooting. Included inside with an anti-shock mount, which can effectively reduce unwanted vibration, cable and handling noise. Also included a furry windproof shield, which specially used for minimizing the wind and environmental noise for outdoor recording, make sure the sound crystal clear.