Wireless Microphones for Cameras: The BOYA BY-M1V2 is an incredibly lightweight, ultracompact and easy-to-use 2.4GHz wireless microphone system for up to 2 people.The BY-M1V2 includes 2 transmitter and 1 receiver and provides excellent sound quality for camearas,smartphones, tablets, DSLRs and camcorders Built-in Omnidirectional Mic and 7 Levels Gain Adjustment: The transmitter has a built-in omni-directional microphone to capture sound sources in all directions and a 3.5mm microphone input for access to an external lavalier microphone (not included). 7 levels of gain adjustment are available to meet different recording needs Noise Cancellation and One Key Mute: There is a noise cancellation button and a mute button on the transmitter. A short press turns on noise cancellation to effectively reduce noise and harvest pure sound. Mute is switched on at the touch of a button depending on the recording needs 196ft Wireless Transmission and 6H Working Time: The BY-M1V wireless microp