Zojirushi Home Appliances Humidifier Steam Type 4.0L White EE-DF50-WA Clean steam type Easy to clean! "No filter" & "Wide-mouth container" Long-time humidification convenient for sleeping "Continuous humidification for about 8 hours" *When operating in standard mode at room temperature of 20°C and full water Triple safety design "Child lock", "Lid opening/closing lock", "Tip-over water leakage prevention structure" *Please make sure the lid is closed securely. Also, if the main unit is left tipped over, a small amount of hot water may flow out from the steam outlet. Dual sensor automatically controls humidity "Automatic humidification 3 levels" "Humidity monitor" that shows the condition of the room "On/Off dual timer" that can be set according to sleep time