This product is a smart wireless microphone that provides professional-level recording output. Plug and play, no APP required. Multiple uses: It can be used in online live broadcast, video Vlog shooting, program interviews, interview recordings, video teaching and other occasions. Instructions: Step 1: Press and hold the power button of the microphone until the connection indicator light flashes, indicating that the phone is powered on successfully. Step 2: Connect one end of the receiving end to the mobile phone interface. Step 3: The connection indicator light of the receiver and transmitter is always on, which means the connection is successful. Open the camera live video and other apps on your mobile phone to use the microphone to collect sound. Note:For OPPO/for VIVO/for IQOO/for Realme brand mobile phones need to search for "OTG" in settings and turn on OTG power supply before they can be used normally. Type:Type-C Interface Colour:Black Material:Plastic Size:8.5x6.3x2.8cm Package Contents: 1 * wireless microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.