One-to-many, the microphone is clipped on the clothes, can connect with N receivers in seconds, ultra-low latency of 25 milliseconds, ultra-long distance of 30 meters with built-in ENC noise reduction function, clear sound without noise. The receiver can be plugged into the sound system or worn with headphones to realize broadcasting technology, application scenarios such as teachers in class, the elderly watching TV, meetings, tour guides, teaching musical instruments such as suona, saxophone, erhu, etc. CE, ROSH, FCC, all battery regulations are complete.