★ Turn on/off microphone
Short press the microphone mute button to turn the microphone on or off,
red means the microphone is off, and white means the microphone is on.
★ Volume adjustment
Press the volume "+" and volume "-" buttons to increase or decrease the
volume accordingly.
★ Equipment charging
(1) Use the original USB data cable and power adapter for charging;
(2) When charging, the power indicator flashes; when fully charged, the
power indicator is always on.
★ Checking the battery capacity
In the power-on state, short press the power button to view the current
remaining power. When the light ring is fully on, it means that the power is
full; When the battery is low, the power indicator flashes red and a
low-battery tone is played.
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