Honeywell Filter Free Warm Mist Humidifier HWM845WWM White Make breathing a little more comfortable with the Honeywell Warm Mist Humidifier. This handy machine provides additional moisture and a less harsh environment. The filter-free humidifier also has an essential oil feature, so soothing scents, oils or liquid inhalants can be added for a more luxurious and spa-like experience. The fan-free operation of the Honeywell HWM845WWM is ideal for bedroom use. The wide tank opening makes it easy to fill and clean for simple maintenance and use. Designed for medium-sized rooms, this item has a 1-gallon capacity tank and can run up to 24 hours on the low setting to ensure consistent quality of air. This Honeywell Warm Mist Humidifier comes with a 3-year limited warranty for added peace of mind for the user. Honeywell Filter-Free Warm Mist Humidifier HWM845WWM, White: Filter-free humidifier has a wide tank opening Essential oil feature Auto shut-off with a reset light 2 settings to adjust moisture output Designed for medium-sized rooms Runs up to 24 hours on low setting 1-gallon tank capacity