Improve air quality and effectively add moisture to the air to relieve dryness that can cause discomfort with this cool mist desktop humidifier. The 500ml water tank allows for long-lasting use and minimizes the need for frequent refills. Water in the tank is atomized into micron-sized water particles using ultrasonic vibration to produce a strong, soft mist. This cool mist mini humidifier allows you to breathe better and increases the air humidity of the space that effectively moisturizes and purifies the air so that you never feel dry again. The humidifier uses one button to operate two spray modes: continuous and intermittent. Just click the button once to activate continuous spray mode. Click the button again to switch to intermittent spray mode. Hit the button for a third time to turn off the spray function. The spray duration lasts up to 6 hours in continuous spray mode and up to 12 hours in intermittent spray mode.Featuring a beautiful snow-mountain design, this easy-to-use, portable humidifier can be used in any location (car, office, home, massage parlor, etc.) to reduce dryness in the air. Its silent operation and warm nightlight feature, available in constant light mode and breathing (intermittent) light mode, make it perfect for the bedroom to aid with restful sleep.This cool mist desktop humidifier includes a built-in probe which automatically powers off the unit when water levels are low or the water tank is removed. Fill up the tank with clean tap water or mineral water, as recommended, and start boosting your health with this portable USB- powered humidifier.