Ultra Quiet and Very Safe: The air humidifier operates at an almost silent 23 dB thanks to ultrasonic technology, ensuring it does not disturb your work or daily activities. It features an automatic shut-off function when the water tank is empty, enhancing safety and extending the device's lifespan. Note: If the inner core appears slightly tilted upon arrival, this is normal and does not affect performance or functionality.Large Capacity and Digital Display: With a 500ml water tank, the humidifier provides long-lasting operation. The built-in digital display clearly shows the remaining water level. Compatible with standard USB power sources, it can be conveniently powered by a USB adapter, laptop, or power bank.Adjustable Spray: This ultrasonic humidifier offers two mist modessingle and dual sprayalong with adjustable mist output up to 45ml/h, allowing you to customize humidity levels for optimal comfort.Night Light Mode: The soft LED light helps reduce discomfort in dark environments and is designed to be gentle on the eyes. It assists during nighttime care for infants, making feeding and diaper changes easier without the need to turn on bright overhead lighting.