Plug & Play:The wireless lavalier microphone no adapter/extra APP/BT needed, just plug the receiver into your device and turn on the mic, and start recording (automatically connect and sync),and you're ready to go. Multi-directional Sound Reception: The wireless mic offers professional full band audio 44.1~48kHz stereo CD quality, more than 6 times the frequency of conventional mono microphones. Real-Time Auto-Sync Technology, reduce the video post-editing. Rechargeable Transmitter and Receiver: The wireless lavalier microphone has a built-in rechargeable battery, the microphone can provide more than 6 hours of continuous use when fully charged, and the rechargeable battery has up to 4.5 hours of working time with only 2 hours of charging time. 20 Meters Barrier-Free Connection: 360°omnidirectional radio, high-density anti-spray sponge and high-sensitivity microphone. The signal is stable, the barrier-free distance is more than 20m, and the human obstacle distance is about 7m.