Built-in omnidirectional microphone,lapel microphone wireless system stable signal and quick response,get rid of the trouble of frequent rerecording. Wireless microphones small Compact Size Help Easily Clip to Your shirt, Tie or Pocket. Hands-Free Perfect for Filmmakers,Vloggers. Notes on using steps Please make sure your device is unlocked and the receiver is plugged into the port of your smartphone. Click the power button of the microphone, the indicator light turns green, which means the power on is successful. The red light on the receiving end is always on, the camera is turned on on the mobile phone, and the live APP can use the microphone to pick up sound. Press and hold the power switch for about 3 seconds to power off the microphone. Unplug the receiver before listening to the recording. Special note: The receiver does not have a battery inside, and does not need to be charged during live broadcast. Features that let you know more Low power consumption, DSP noise reduction technology, low-latency, active noise cancellation, back-to-back 5-8m, transmission distance 20m, Suitable for outdoor live broadcast/type c fast charging/ remote video recording vlog/online live broadcasting/ news interview/online class teaching/shop exploration/eating and broadcasting and other application scenario/Online class live/Live interaction/Interview record.