Using UHF High-frequency Bands, it is not easy to string the frequency, not easy to drop, and the ability to receive the signal is stronger That is, plug-in, no plug-in, the device requires a microphone or mic interface Models, TVs, and computers such as audio interfaces cannot be used alone.
The microphone cannot be connected via Bluetooth (mobile phones, TVs, computers) must be used with microphone devices or mic interface with amplifier/speaker. Channel support: single channel FM: Digital Modulation