Features: - Designed with UHF wireless microphone dedicated frequency band, free from interference from other industrial frequencies. - 32 sets of channels for adjustment to avoid frequency interference, supporting simultaneous use of multiple sets of microphones. - Infrared matching to synchronize the channels of a transmitter (Not included) and the receiver with just one click. - Long operating range up to 50m in open area, reliable performance. - USB Type-C interface of the receiver to connect a mobile power supply for outdoor use. - 2 * AA battery to power up the microphone for long time operation, easy to maintain and replace. - Independent output and combo output to connect a mixer or a Karaoke amplifier. - Applicable to teaching, training, speech, home entertainment, outdoor performance, etc.