【Ultrasonic Cool Mist Humidifier】Ultrasonic cool mist technology safely and quickly moisturizes dry air for up to 45 hours of continuous operation in small, medium to large rooms. Powerful mist output with high and low settings makes this humidifier ideal for bedrooms, kids' rooms, baby nurseries, offices, and indoor plants mushrooms. 【Top-Fill Design】Features an innovative bottom water tank design and wide tank top funnel design. Easily refill the humidifier by opening the cover and adding water directly to the water tank for minimal water leakage, or adding water directly to the top no need to open the cover. Easy to fill, empty, and clean. 【Promotes Restful Sleep】Perfect for light sleepers, our air humidifier is designed to give you a restful night’s sleep, the whisper-quiet operation barely makes any sound to ensure uninterrupted sleep, while the optional night light offers a soft blue glow atmosphere light (You can choose it on/off). 【Multiple Adjustments】The humidifier comes with 3 timer options (2H/4H/8H) and 3 adjustable mist outputs levels (high/medium/low), with a mist output capacity of up to 280ml/h, delivering maximum performance and versatility for the whole family to enjoy. 【Water Shortage Protection】When the water level drops below the minimum water level mark, the water shortage protection device will automatically disconnect the atomization circuit. The humidifier auto shut off after the night light flashes 5 times. After powering off and adding water, the humidifier can be used normally