Ultra-quiet + Sleep Mode: VIVOSUN humidifier runs so quietly that it's almost silent (≤38 dB) - never disturbing your sleep; Set it to sleep mode to turn off all lights and sounds. Air Ionization / Built-in Filter / Diffuser: Our ultrasonic humidifier is much more than your average, run-of-the-mill, regular humidifier—it's also an essential oil diffuser, air ionizer, and built-in filter; The air ionizer and built-in filter work together to bring you cleaner, fresher air by increasing the number of negative oxygen ions in the air; The essential oil diffuser circulates fragrant oils into the mist, giving you the relaxing touch of wonderful aromas.
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