Wireless Transmission System: The ES-386 is a wireless transmission conversion system that converts your wired microphone into a wireless microphone while maintaining maximum audio quality. Using UHF technology, strong anti-interference ability. The frequency band used is 540.0MHz-590MHz , the wireless transmission range reaches 98 feet, and the use is not bound by the cable, free to move. Device compatibility: The receiver of the ES-386 can switch operating voltages (0V,3V,48V), adapt dynamic microphones (0V) and capacitive microphones (3V,48V). There is also a volume adjustment function (VOL1-VOL7), which allows you to control the volume remotely. Rechargeable battery: The device has a built-in rechargeable battery that can last for about 5 hours after a full charge, and you can charge your device at any time via a USB cable without worrying about excessive use time. Excellent compatibility: The device is free of XLR to 6.35 adapters, the transmitter is compatible with musical