USING TIPS:
1. Keep microphone right in front of the mouth for maximum amplification.
2. NO HOWLING: the microphone and speaker need to be positioned a distance from each other, and are best facing away from each other. Feedback may also be caused if the volume setting is too high. The best way is to put on the microphone headset, hang the amplifier speaker around your waist, then turn it on, and finally gradually increase the volume as needed.
3. How do I turn off Bluetooth?
Because Bluetooth is turned on by default. After you turn it on, please short press the M key to switch the mode to power mode to turn off the Bluetooth.