https://t.co/1O3PfiLt8v Whisper -Quiet Ultrasonic Operation: Adopted ultrasonic technology, this humidifier is extremely quiet when working. It gives out ultra fine and smooth mist which can soften and moisten dry and chapped skin in winter #jmonline https://t.co/VeDoWxynrjhttps://t.co/1O3PfiLt8v Whisper -Quiet Ultrasonic Operation: Adopted 1848844 https://t.co/1O3PfiLt8v Whisper -Quiet Ultrasonic Operation: Adopted ultrasonic technology, this humidifier is extremely quiet when working. It gives out ultra fine and smooth mist which can soften and moisten dry