The ultrasonic humidifier increases humidity and helps prevent stuffy air, germs, allergies, and dry skin. It lifts your mood, creates a peaceful atmosphere, and reduces stress. It's also ideal for a cool breeze in the summer. The water tank has a capacity of 300 ml. There is an automatic shut-off feature after 4 hours in continuous spray mode and after 6 hours in intermittent spray mode. The LED lighting of the humidifier can be switched between a subtle hue and rotating LED colors or turned off completely.