The BY-BMM400 by Boya is an external omni-directional microphone with speaker that you can use with your smartphone, laptop and PC. It records sounds in 360 degrees all around in high quality. The microphone does not only record sounds; it also has a built-in speaker so you can listen to sounds. Because all the necessary cables are included, you can easily connect the BY-BMM400 to smartphones (iOS and Android), tablets, PC, laptops, MP3 players and more.