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 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 recordersKindly 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.Specification:Transducer type: Electret CondenserPolar Pattern: Omni-directionalFrequency Range: 65Hz ~ 18KHzSignal / Noise: 74dB SPL1X Boya Omnidirectional Lavalier Condenser Microphone1XLapel Clip1XFoam windscreen1X1/4¡± adapter1X LR44 battery1X English User's Manual