The pureguardian H920BL is an ultrasonic humidifier with a 0.21-gallon tank capacity and two mist settings for customizable humidity levels. Its Silver Clean technology inhibits the growth of mold and mildew on the water tank surface. The 360° mist director allows you to adjust the direction of the cool mist, while the night light offers a soft glow for nighttime use. The auto shut-off feature prevents damage if it runs out of water, and the included cleaning brush simplifies maintenance. Ideal for small to medium-sized rooms, the pureguardian H920BL promotes a comfortable indoor environment.