Ultra Quiet and Very Safe: The air humidifier operates with almost silent 23 dB thanks to ultrasonic technology. It will never affect your work or your life. The humidifier can turn off automatically when the tank runs out of water. To avoid accidents and extend the life of the humidifier. Note: If you receive an oblique inner core, don't worry that it is a bad product, it can be used normally! Large Capacity and Digital Display: The air humidifier can work for a long time with a water capacity of 500ml. The digital display can clearly show the remaining battery charge. With a compatible USB cable adapter, the laptop power bank can be easily charged in time. Adjustable Spray: Our ultrasonic humidifier has two spray modes: single spray and double spray. With an adjustable mist flow rate of up to 45ML/H, you can easily control the humidity level for maximum comfort. Night Light Mode: Soft light helps eliminate fear of darkness and does not harm eyes. For parents with newborns, the light makes nighttime changes and feeding easier without having to turn on a real light to see.