Plug & Play and auto pairing- No app or WiFi Bluetooth needed, the item includes a microphone and receiver (brightening port), just clip the microphone to your collar and plug the receiver to your iOS devices, they will connect automatically. Just plug and play directly, no app or Bluetooth required. Charge mode/noise cancellation: allows you to charge the phone while shooting. Excellent noise cancellation, keeps the voices to come through clearly even amidst the external surrounding noise disturbances. Compact mini size makes it easy to hang on your shirt, tie or pocket. 1.8m audio range and 6 hours of talk time: with built-in rechargeable batteries, the wireless tie microphone provides over 6 hours of talk time after about 2 hours of charging. Easy to connect and cover 1.8m for signal, 0.009s transmission delay, helps you reduce power problems and record clearly or take video from a greater distance.