Features: Dual Head Microphone with 3.5mm Monitoring: BOYA BY-MM1 PRO video microphone features dual end sound pickup in one, front/ rear/ front and rear 3 pickup modes are easily interchangeable, headphone real-time monitoring is accessible with 3.5mm port. Super-cardioid Pickup: Condenser microphone with super-cardioid polar pattern can pick up ultra-clear sound from one direction and minish unwanted sound affection, intelligent noise-canceling brings much higher quality. Low Noise Recording: Mounted on the steady shock mount, the microphone can record with low background noise. Foam and fur windshield can proof wind and pop sound, more natural sound flows in. Powerful Function: With 3.5mm TRRS plug, the microphone can change into phone or camera working mode with switch above it, versatile for multi-purpose application with no adapter cable requirement. Wide Application: The microphone can be widely applied in phone Vlog making, camera video recording, interview, singing, instrument recording, suitable for smartphones, DSLR, mirrorless camera, camcorder, recording pen and more.