5Checking the battery levelSimultaneously press the Volume up button and the Multifunction button for1 second.• Less than 30%: The notification light flashes red three times.• 30-60%: The notification light flashes yellow three times.• More than 60%: The notification light flashes green three times.To save energy, unplug the charger when not in use. The charger does nothave a power switch, so you must unplug the charger from the electric socketwhen not in use to avoid wasting power. The charger should remain close tothe electric socket and easily accessible while charging.