The Rowenta humidifier provides the optimal humidity level at home to protect your health against the effects of dry air. The ultimate ultrasonic technology creates micro-fine water droplets to ensure the highest level of performance, meaning 2 gallons output per day combine with 24 hours running time. Thanks to its built-in hygrometer, this humidifier measures the level of humidity in your home and automatically adjusts the steam output to reach and maintain the perfect humidity level. Especially, the automatic Baby Mode suits babies daily humidity level needs. The humidifier also guarantees a clean mist thanks to its integrated anti-bacterial setting which heats the water up to 95 degrees F and kills 100% of bacteria.