Breathe better and sleep more comfortably with this dual mist humidifier virtually silent. Helps provide relief from the year the drying effects of air conditioning and heating, including dry nose, throat, lips and itchy skin. The ultrasonic humidifier disperses warm or cool mist, while the 360 degree adjustable mist nozzle bi-directional supply division for a wider coverage. Addition, the unit of ion exchange filter and deionized water to remove the scale forming calcium and magnesium from hard water. This prolongs the life of ultrasonic generator and prevents white dust particles to deposit in the air. Heat 90 watt humidifier, fog property offers approximately 400 ml of operating humidity up to 10 hours on high, while the 43-watt cool-mist configuration offers about 330 ml of operating humidity up to 12 hours at the top. It is equipped with a 4-liter water tank, the protection of overheating 5-8/9-foot a power cord, cleaning brush, and elegant design