1. This machine realizes the function of wireless microphone through the principle of FM radio transmission and reception. That is to use the "transmitter" as a transmitting station to transmit a frequency point, and use the "speaker" as a receiver to receive the frequency point sent by the transmitter, so that the function of wireless shouting can be realized.
2. This machine has a built-in rechargeable lithium battery, which can be adapted to various mobile phone charging heads for charging.
3. The red light is always on when the transmitter is charging, and the red light is off when it is fully charged.
4. Input: DC5.0V, 1A
5. Channel: 3

Operating procedures:
1. Connect the plug of the wired microphone to the transmitter together
2. Turn on both the transmitter and amplifier
3. Press the M button of the loudspeaker to enter the radio mode (the FM letter appears on the display), and then press the next button for 3 seconds to start searching.
4. When the radio station is searched, click the button to see the display screen and find one of the three frequency points of 76.1/100.0/107.9, then you can call wirelessly