When the headset is in low power will be low battery indication, then you have to give the Bluetooth charging, the red light will be lit while charging, the red light after full will be transformed into blue light.
When the headset is low, there will be a low-power prompt, at this time you must charge Bluetooth, when charging the red light will always be bright, full of red light will be converted to a blue light.
When the headset is in low power, there will be a low power prompt. At this time, Bluetooth must be charged. When charging, the red light will always be on, and when it is full, the red light will turn into the blue light.