【 Plug and Play 】 enable OTG in phones, this micro clip-on is easy to use, automatic pairing, automatically connect when plugged into receiver, no adapter, additional app, Bluetooth required. Red light on reception of lightning; Press the mic switch key, the indicator light turns green, then the power supply is on; The red led of the receiver and the green led of the microphone always continues on, then you can use the microphone to receive the sound by opening the camera of the phone, the live app or other applications. Kind Note: some Android phones may need download APP if they are not compatible (Open Camera APP). Please watch this video