The Boya BY-BM3011 is a shotgun microphone with a supercardioid pattern that sounds much better than using a smartphone, tablet, camera, or camcorder with a built-in microphone. It is compatible with most smartphones, tablets, DSLRs, or camcorders that have a 3.5mm microphone jack. The unique supercardioid pickup pattern has a narrow recording area that focuses directly in front of the microphone and reduces other ambient noises, ensuring that the subject is isolated from background sounds.