BOYA BY-M1 is an Omni directional 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 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 Kindly Note: 1. For Smartphone: Switch off the microphone. Slide the ON/OFF up to OFF/Smartphone. The power is shut down. 2. For DSLR, Camcorders, Audio recorders, PC etc. Switch on the microphone. Slide the ON/OFF up to ON.