Dream under the stars and create a calming sleep environment for your child with the Vicks Starry Night Filtered Cool Moisture Humidifier. Adding moisture can help little ones breathe better, soothing a cough or stuffy nose, while the filter removes minerals for purer moisture. Use the projector to lull your child to sleep under a sky of color-changing stars. This humidifier has a self-regulating Evaporative system, water is absorbed into a porous wicking filter. Air blowing from the fan through the filter evaporates moisture into the air that is invisible, and automatically adjusts the output for maximum effectiveness. Adjust the variable humidity control for a customized output and add optional Vicks VapoPads for a relaxing and soothing aroma. Tank Size: 1 gallon. Room Size: Small-Medium. Run Time: Up to 24 hours. Unit Size: 10.07″ x 12.44″. Included Accessories: 1 Vicks VapoPad.