This is the personal humidifier with a removable 26 3/4-oz. reservoir treated with an EPA-registered fungistatic agent that protects it from mold and fungal growth. Generating an ultrasonic cool mist with minimal noise, it dispenses 4 1/2 oz. of water into the air in just one hour and runs continuously for up to 10 hours. With two fan speeds, a low water indicator, and a built-in nightlight, the sleek, compact unit fits comfortably on a desk or nightstand. Plugs into AC with 5' cord. 10 3/4" H x 4 3/4" W x 5 1/2" D. (1 lb.)