The boya by-mm1 is a universal compact shotgun microphone, which is specially designed to improve the sound quality of videos with respect to built-in microphones. the by-mm1 comes in compact size and light weight aluminium construction. it will not be a burden while shooting. the by-mm1 has a plug and play design, so no need to worry the battery status (if your camera provides phantom power). included in the box is an anti-shock mount, which can effectively reduce unwanted vibration, cable and handling noise. also included is a furry windshield, which specially can be used for minimizing the wind noise during outdoor recording. Features Compact on-camera microphone Compatible with smartphones, dslr cameras, consumer camcorders, pcs, etc. Rugged metal construction No battery required Professional furry windshield included Usage boya by-mm1 microphone 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 vs. by-mm1+ The new + version of the by-mm1 has a higher sensitivity and produces less noise. in addition, a rycote lyre bracket is included, which minimizes unwanted noise when moving. the + version comes with a popcap and windbreak.