Posted by a reviewer on Amazon

The power button on the device illuminates the leds to show you how much charge remains

Posted by a reviewer on Amazon

Holding down the power button will turn these leds off

Posted by a reviewer on Amazon

You do not need to press the power button to begin charging another device

Posted by a reviewer on Amazon

The zilu power bank immediately turns on when it is being charged and when it is charging another device

Posted by a reviewer on Amazon

It will automatically turn off when it is done charging your plugged in devices

Posted by a reviewer on Amazon

The zilu milano does not heat up as do some other external power banks when it is charging or when it is charging another device

Posted by a reviewer on Amazon

It would be great to have an adapter to use the charger cord with the phone for charging

Posted by a reviewer on Amazon

If you press the power button it shows you how much battery is has left