The air humidifier 220ML adopts ultrasonic technology, with no disturbing noise while misting, which may help relax. One button simple design is easy to use. the special top cover design won’t spit water and don’t worry about a leak or wet mess. portable and small design, perfect for your homeroom, baby bedroom, office desktop, car, travel, office. which is effectively moisturizes dry skin and helps you reduce skin peeling.