The Saramonic SR-M3 is a directional microphone for video use. A special feature of the SR-M3 is a separate microphone input, e.g. for a lavalier microphone, and a headphone output. So you can monitor the sound directly from the microphone if your camera doesn't have a headphone jack. In addition, the microphone has a 200Hz high-pass filter and +10dB sensitivity adjustment.