Silver Clean Protection fights the growth of mold and mildew on the surface of the water tankUltrasonic Technology quietly disperses a fine mist providing relief from the dry airOptimize comfort with soothing low and high cool mist settings.Burp your baby after every 2-3 fluid ouncesCompact design is perfect for your nursery or desktop and features an optional night lightNo evaporating pads, filters or wicks to clean or replace. Keep your baby in an upright position while you feed her