red light stands, when start up withour any operation, it will be automatically shut down after 30 mins, short on/off button button switch power
output size (1-hight, 2-medium, 3-Lower ) fast press twice (on/off) it will show the current barrery level , and then press any key will be return
( Green reprensents power)
the power will became 25%, when use the 5V charger, the device will be off automatically and stop working.
the scab off on their own.
( there will be a touch if black) during the recovery period.