Designer Series, 1.25 Gallon Capacity, Gray, Cool Mist Humidifier, Textured Housing With Clear Shroud & Visible Water Window, Filter Free, Cool Visible Mist, Essential Oil Feature, Side Mounted Rotary Knob To Adjust Output Level, Stylish Design Is Ideal For Living Areas, Auto Shut Off When Empty, Medium Room Size, Runs Up To 24 Hours Per Filling.