Simple Plug & Play – no APP required The updated wireless lapellier microphone looks more professional. To use it, simply plug the receiver into your iOS device, turn on the microphone, and no additional app or adapter are needed. Next, begin recording (auto-connected & synchronized). Long workdays and long-distance communication: When fully charged, the lapel microphone's built-in rechargeable batteries can last up to eight hours. and 65 feet when working without a cable The transmission distance is approximately 40 feet if walls or excessive noise are obstructing the line of sight between the microphone and the receiver. To power the phone, insert a type-C plug into the receiver. if the live broadcast is taking place while the phone is dead. Crystal Voice Synchronization in Real Time with No Delay: Merely 0.009 seconds