This innovative lavalier microphone is different from others which includes transmitter and receiver, they will automatically connect, so APP and Bluetooth are not required. Just plug the transmitter into the devices and play it directly. It has real auto-sync technology which extremely reduce the video post-editing. It can synchronize the background music for phone and human voice in real time. It can be used for YouTube/Facebook Live Stream, Tiktok, game streaming, Vlog, Interview and other lovers of video recording, of course, you can also use any microphone alone. It can provide more than 4 hours of continuous use after being fully charged. Just Clip and go, no cables required perfect for outdoor recording.