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. 280ML/h large fog humidification, circulating fog, goodbye to dryness. 35dB bass operation, accompany you to sleep comfortably, no noise annoyance. Built-in automatic detection chip, automatic power-off when water shortage, effectively prevent dry burning, more secure. Touch button, touch switch, adjust the size of the fog, work efficiently.