SUPER-CARDIOID &WIDE ADAPTABILITY : BKN MM-1 is an Upgraded super-cardioid condenser microphone that delivers lower noise and higher sensitivity sound; With both TRS cable and TRRS output cable included, it is compatible with iPhone, Android smartphones, cameras, camcorders, audio recorders, PCs, and other audio/video recording devices. PLUG & PLAY : Since there is no battery required in this microphone, you can just plug and play; no need to worry the battery status and complex hookup and pairing process. MONITRORING OUTPUT & STRONG : The 3.5mm headphone output lets users monitor and playback audio with compatible apps ,so you can ensure the integrity of audio. With rugged metal construction, this microphone can last a long time ANTI-SHOCK : The included Detachable Lyre shock mount can effectively reduce unwanted vibration, cable and handling noise; thus can give your video a professional sound and can potentially reduce you post-production audio editing work. No battery Required : Do not need the battery, Just use it directly with your smartphones or DSLR cameras.