Negative ion filter,water atomization with ultrasonic,effectively decompose formaldehyde,Import SAMSUNG electrical component,ABS antibacterial material, built-in muffler ,capacity:850ml,strong mist:90ml/h, low mist:60ml/h,Automatic protection to stop working when it's empty HUMIDIFYMICRO-COMPUTER CONTROLWATER ATOMIZATION WITH ULTRASONICNEGATIVE..