BOYA BY-M1 is an Omnidirectional lavalier microphone, designed for Smartphones, DSLR, Camcorders, Audio recorders PC etc, it is perfect for video use. With Omni pickup pattern, for full 360° coverage, it absolutely gives you the possibility to capture anything in your sight. Moreover, the integrated 6-meter (20”) cable with 3.5mm 4-pole gold plug is just a second thing to be connected to your smartphones and most of your cameras. 100% a good choice to be picked. Super sound for presentations and video audio recorders. Using the microphone For Smartphone Switch off the microphone. Slide the ON/OFF up to OFF/Smartphone. The power is shut down. For DSLR, Camcorders, Audio recorders, PC etc Switch on the microphone. Slide the ON/OFF up to ON.