Note: The tubular absorbent cores must be pre-moistened (soaked a little in the water tank), otherwise it will take some time for the humidifier to start misting. Please let the absorbent core soak completely before turning on the switch. [Humidification and Air Purification] An ultrasonic humidifier that gently vibrates the water and emits it as a mist, and since it is not a hot mist, there is no risk of burning. If the air is dry, you may catch a cold or the flu. Maintaining proper humidity with a humidifier also helps prevent colds and flu. It is effective for a healthy and beautiful life. It eliminates dryness in the heat and cold and moisturizes the skin. [Quiet Humidification and USB Power Supply] Quiet humidifier, operating noise is 30 dB or less, very quiet, maintains humidity in the room and does not disturb comfortable sleep. Since it is powered by USB, it can be powered by a computer or mobile battery, it can be used not only in the bedroom but also in the car or office. It