Helps return essential moisture to dry air for better breathing and a more comfortable sleep. Quiet output won't disturb sleep. Adjustable mist control. Includes free demineralization cartridge to help trap impurities in the water. Use with Vicks VapoPads for soothing menthol scent (sample pad included). Scent pad technology provides soothing Vicks scent. Medium/Large room size. Up to 24 hours of operation. 1.2 gallon capacity.