GZ electronics GZ-99 Guide De L'utilisateur page 7

Charging the Speaker
The red blinking of the LED indicates that the battery is running low. As
soon the battery starts charging, the LED will start to glow red solidly.
When the battery is fully charged, the LED will go down.
Indicator LED
Blue
• Blinking: no Bluetooth connection;
• Blinking twice: maximal or minimal volume has been reached;
• Glowing: Bluetooth connection has been established.
Red
• Blinking: the battery is low;
• Glowing: charging the battery (the LED goes down after the battery
is fully charged).
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