Sleep in total silence. No need to tolerate hums and whistles. The peaceful sleeping atmosphere for you.and safely every night thanks to the auto-shut off feature and nearly silent operation. Sensitive detection of water level, when the water tank is out of water, the humidifier will automatically stop working, intelligent anti-dry burning. Micron-level fine mist, fog volume, uniform humidification. Low decibel sleep function, bring moist air at the same time, will not disturb sleep. One key adjustment, long press to turn on the light illumination mode, long press again to turn off.