Stadler Form Anton Humidifier - White Rated power: 18 Watt. Indefinite variable output level Output max. 1 gallon per day. Tank capacity: 0.8 gallon. Dimensions: 5.7W x 11.2H x 7.3D. Night mode. Ultrasonic humidifiers are not to be used with water that has been through a water softener. In that event use distilled water or try an evaporative humidifier such as Oskar or Tom. Automatic shut-off. Perfume dispenser (Aroma Steam Technology). Weight : 4.0 lbs. Room size: up to 250 sq ft. Kindly look into the manual given below (Refer from page 11 for English language)