Low battery – Voice propmt warning "Low battery" when 30% capacity of the power is left, red LED light flashes once every 10s.
Fully charge time – 2H
Used time after fully charged – 24H (ANC Off); 15H (ANC On)
Standby time – Around 35 days (ANC Off)
Indicators
Charging - LED on the headphone turns RED
Fully charged - LED on headphone turns OFF
Power On / Off
Power On: Slide the power switch to the middle position
Power Off Manually: Slide the power switch to the power icon side
Power Off Automatically: 10 minutes after disconnected with sound source device
Note: Headphones with lot / batch number before 20F1 like 20D1, are with Micro USB charging ports and cables; later batches (20F1 included) like 20H1, are with Type C charging ports and cables.
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