This is the cool mist humidifier that is easily filled from the top. Unlike lesser humidifiers that require disassembly or removable trays, this unit’s reservoir is conveniently accessed by simply removing a top cap. It has three mist settings (high, medium, and low) and has built-in ambient lighting that can be set to a single hue or rotate through a rainbow of seven colors. It can also be used as an essential oil diffuser. With a 1-gallon capacity that provides up to 24-hours of moisture. AC plug. 12 1/2" H x 7 3/4" W x 7 1/2" D. (3 lbs.)