Enjoy comfortable, clean air right away with TOSOT Ultrasonic Cool Mist Humidifier. Unlike traditional humidifiers with a bottom-fill tank, the Cool Mist Humidifier features a top-fill design that saves time and prevents spills. The one-button controls eliminate any complicated settings for a simple humidifier that brings convenience to your life. The Cool Mist Humidifier features three different mist output levels (high, medium, low) for hours of fresh, clean air. The 360° mist nozzle is also designed to cover the entire room. Its peak sound level of just 28 decibels lets you have a peaceful sleep at night.